Tarbela Dam was completed in 1976, which is the year the construction works were finished and the dam became operational.

Local Area Network: LAN stands for Local Area Network, referring to a network covering a limited geographic area such as a home or office.

Both is correct because the Internet is commonly called 'the Net' and is also described as a 'network of networks,' so both descriptions apply.

SIM stands for 'Subscriber Identity Module' because it is the card/chip that holds a mobile subscriber’s identity and network credentials.

'Within' is correct because 'within two hours' specifies a time limit or deadline by which the homework must be finished.

A commuter is a person who travels regularly, typically between home and work or school.

Armaghan-E-Hijaz is correct because that work was published after Allama Iqbal’s death, making it a posthumous collection.

Ilm-Al-Iqtisad — Ilm-Al-Iqtisad is the work by Allama Iqbal that deals with economic subjects, so it is the correct book on economy.

Quaid-e-Azam resigned from the Indian National Congress in 1920, the year he formally left the party to pursue separate political work for Muslims.

16M + 12W = 20 days. 18W = 40 days, so 1W = 1/720 work/day. 16M + 12(1/720) = 1/20, 16M = 1/20 - 1/60 = 1/30. M = 1/480. 12M + 27W = 12/480 + 27/720 = 1/40 + 3/80 = 5/80 = 1/16. Total work = 1, so days = 16/1 = 16. Option B (18) likely a typo.