FIA

The correct phrasal verb is 'put off,' which means to postpone or delay something. 'Put of' is incorrect, and 'put on' means to organize or arrange, which does not fit the context here.

A ratio equivalent to 3:7 must have terms in the same proportion. Multiplying both terms of 3:7 by 3 gives 9:21, which is option C. Options A and B do not maintain the same ratio.

The word 'trepidation' means a feeling of fear or anxiety about something that may happen. Therefore, 'Fear' is the correct synonym among the options provided.

As of the latest November 2024 TOP500 supercomputer rankings, the fastest supercomputer in the world is El Capitan, located at Lawrence Livermore National Laboratory in the United States. It achieved a Linpack performance of 1.742 exaflops, making it the world's most powerful supercomputer. Frontier, also in the United States, ranks second. Therefore, the correct answer is 'A' (The United States). The original explanation incorrectly stated that Frontier is in China and that China hosts the fastest supercomputer, which is factually incorrect.

Sound waves require a medium (solid, liquid, or gas) to travel through because they propagate via particle vibrations. A vacuum lacks particles, so sound cannot travel through it.

To find the sum of 4 arithmetic means between 18 and 3, we consider the arithmetic sequence formed by 6 terms: 18, four arithmetic means, and 3. The common difference d = (3 - 18) / 5 = -3. The four arithmetic means are 15, 12, 9, and 6. Their sum is 15 + 12 + 9 + 6 = 42. Therefore, the correct answer is option C (42).

The 47th G7 summit was held in the United Kingdom from June 11 to 13, 2021. This is a well-documented fact, making option A the correct answer.

Under the FIA Act, the power of arrest without a warrant is typically entrusted to a Sub-Inspector, who has the authority to arrest suspects during investigations. Constables and Assistant Sub-Inspectors generally do not have this power independently.

The correct phrase is 'I am as sure of it as you are.' The word 'as' is essential in this comparative structure to indicate equality. None of the options provided (Quit, At, Very) correctly complete the phrase. Therefore, the correct answer is 'None of these' since 'as' is missing from the options.

As of mid-2024, the current president of Sri Lanka is Ranil Wickremesinghe, who is not listed among the options. Therefore, 'None of these' is the correct answer.