**Rule: Understanding Idiomatic Expressions.** The idiom 'smoke and mirrors' refers to trickery or deception, something that is designed to mislead people into believing it is more impressive or substantial than it really is. 'Empty promises' are a form of deception. Option (c) is the correct definition. Option (a) is the literal origin of the phrase, from stage magic. Option (b) is the opposite. Option (d) is an unrelated interpretation.

**Rule: Understanding Idiomatic Expressions.** The proverb 'you can't have your cake and eat it too' means that you cannot have or do two good things at the same time that are contradictory. The example of saving money versus spending it illustrates this choice between two mutually exclusive options. Option (b) correctly explains the proverb's meaning. Options (a), (c), and (d) are all literal or incorrect interpretations related to cake.

**Rule: Understanding Idiomatic Expressions.** The idiom 'bite the bullet' means to face a difficult or unpleasant situation with courage and determination. Confessing to breaking a window is a difficult act that requires courage. Option (c) correctly defines this idiom. Option (a) is the literal action from which the idiom originates (soldiers would bite bullets during surgery without anesthesia). Option (b) and (d) are the opposite of taking responsibility.

**Rule: Understanding Idiomatic Expressions.** The idiom 'know the ropes' means to be familiar with all the details and procedures of a particular task or situation. A 'seasoned sailor' would certainly be an expert in navigation. Option (b) is the correct definition. Option (a) and (c) are literal interpretations of 'ropes.' Option (d) is an incorrect assumption.

**Rule: Understanding Idiomatic Expressions.** A 'pipe dream' is an idea or plan that is impossible or very unlikely to be realized. The lack of 'any real funding' makes the business plan unrealistic. Option (c) correctly defines this concept. Option (a) is the opposite. Option (b) is a different kind of dream. Option (d) is an incorrect literal interpretation.

**Rule: Understanding Idiomatic Expressions.** The idiom 'bury the hatchet' means to stop an argument or conflict and become friends again. The phrase 'move on' after an 'argument' strongly suggests reconciliation. Option (c) is the correct meaning. Option (a) is the literal action from which the idiom derives. Options (b) and (d) are antonyms of the idiom's meaning.

**Rule: Understanding Idiomatic Expressions.** The idiom 'bring to light' means to reveal something or make it known to the public, especially something that was previously secret or hidden. The 'new evidence' served to reveal the 'real reason.' Option (b) correctly defines this action. Option (a) is a literal interpretation of 'light.' Option (c) is unrelated. Option (d) is the opposite of the idiom's meaning.

**Rule: Understanding Idiomatic Expressions.** A 'fair-weather friend' is someone who is a dependable friend only when circumstances are pleasant or advantageous for them and deserts you during times of difficulty. The sentence itself provides the definition. Option (c) is the correct meaning. Option (b) describes a true friend, the opposite of a fair-weather friend. Options (a) and (d) are incorrect interpretations based on the word 'weather'.

**Rule: Understanding Idiomatic Expressions.** The proverb 'don't put all your eggs in one basket' is advice against concentrating all of one's resources or efforts in a single area, as one could lose everything if that one area fails. The sentence applies this to financial investment. The phrase means you should *not* do what is described in option (b). Therefore, the idiom itself is a warning against risking everything. Option (b) defines the action the idiom advises against, making it the correct meaning in context. Options (a) and (c) are literal interpretations. Option (d) is a completely unrelated interpretation.

**Rule: Understanding Idiomatic Expressions.** The idiom 'the gift of the gab' refers to the talent of speaking fluently, eloquently, and persuasively. The result that he 'can persuade almost anyone' is a direct consequence of this talent. Option (b) correctly defines this ability. Option (a) and (c) are incorrect literal interpretations of 'gift.' Option (d) suggests meaningless talk, whereas the idiom implies effective, persuasive talk.