Rule: Verbs of Confirmation/Denial. If the camera footage supports the witness's testimony, it confirms what the witness said. 'Corroborated' means to confirm or give support to (a statement, theory, or finding). This is the correct legal and formal term. Options (a) 'refuted', (b) 'contradicted', and (d) 'disputed' are all antonyms, meaning the footage would have shown the witness was wrong.

Rule: Vocabulary of Leadership Styles. 'Listening to employees' concerns' is a key feature of a leadership style that involves employees in decision-making. 'Participatory' leadership involves taking into account the opinions and ideas of the team. This word accurately describes the manager's approach. Options (a) 'autocratic', (b) 'dictatorial', and (d) 'tyrannical' all describe a leadership style where the leader makes all decisions without input from others.

Rule: Vocabulary of Importance. The need to 'act immediately, without hesitation' implies the situation was very serious and important. 'Gravity' means extreme or alarming importance; seriousness. It correctly describes the weight of the situation. Options (a) 'triviality' (lack of importance), (b) 'levity' (humor), and (d) 'simplicity' do not convey the required sense of urgency.

Rule: Geographical Vocabulary. The defining characteristic of a desert that makes survival difficult is its dryness. 'Aridity' is the state of being arid, which means having little or no rain; too dry or barren to support vegetation. This is the precise term. Options (a) 'fertility', (b) 'humidity', and (d) 'moisture' are all antonyms, describing conditions that would make survival easier.

Rule: Vocabulary of Truth/Falsity. An 'acquittal' means the defendant was found not guilty. This would happen if his alibi was proven to be true. 'Veracity' means conformity to facts; accuracy. The truthfulness of the alibi led to the acquittal. Options (a) 'flaw', (b) 'weakness', and (d) 'fallacy' are all words for faults or falsehoods, which would have led to a conviction, not an acquittal.

Rule: Vocabulary of Fullness/Emptiness. The second part of the sentence implies there were many allusions ('that were lost on most'). Therefore, the first part needs a phrase that means 'full of'. 'Replete with' means filled or well-supplied with. This is the correct choice. Options (a) 'devoid of', (b) 'lacking in', and (d) 'short of' are all antonyms, meaning empty of or not having enough.

Rule: Rhetorical Devices. A fire station burning down is a classic example of situational irony, where the outcome is incongruous with what one would expect. The very place designed to fight fires succumbs to fire. While it is also a 'tragedy' (a), 'irony' (c) specifically captures the strange and contradictory nature of the event. 'Comedy' (b) is unlikely as it's a serious event. 'Predictability' (d) is the exact opposite of what makes the situation notable.

Rule: Vocabulary of Labor Relations. Paying workers less than the legal minimum wage is an act of taking unfair advantage of them. 'Exploiting' means to make full use of and derive benefit from (a resource), often unfairly. This is the correct term for the company's illegal and unfair action. Options (a) 'rewarding', (b) 'compensating', and (d) 'praising' are all positive actions.

Rule: Vocabulary of Foretelling. A prophecy is something that foretells the future. A 'harbinger' is a person or thing that announces or signals the approach of another. It is a synonym for a sign or omen, which fits the context of a prophecy foretelling a war. Options (b) 'consequence' and (c) 'result' would come after the war. Option (d) 'memory' would also come after.

Rule: Vocabulary of Personality. A career in nursing requires a selfless concern for others. 'Altruistic' means showing a disinterested and selfless concern for the well-being of others; unselfish. This word perfectly describes the ideal nature for a nurse. Options (a) 'callous' (unfeeling), (b) 'malevolent' (wishing to do evil), and (d) 'selfish' are all antonyms.