Part 1. Definition
Given a prompt and four completions, select the completion that is the most plausible in continuing or answering the prompt. This task is designed to test common sense and has various categories ranging between idioms, negated statements, polysemy, subject referencing, and quantitative reasoning. Generate either Completion A, Completion B, Completion C, or Completion D.
Part 2. Example
Prompt: A clown is fashioning animals from long balloons. He 
Completion A: releases the animals into their natural habitat. 
Completion B: makes a giraffe and hands it to a child. 
Completion C: yells out for his second in command to pilot the battleship around the obstacle. 
Completion D: releases the balloon and it flies high into the air.
Answer: Completion B
Explanation: The clown is an entertainer and is twisting balloons to resemble an animal. There are no live animals, and these types of twistable balloons are not able to fly or float up.
Part 3. Exercise
Prompt: In old times, people thought that the Earth was flat. It is because 
Completion A: the Earth is actually flat. 
Completion B: they were misinformed. 
Completion C: they have not been to the other side of the planet. 
Completion D: although the Earth is spherical, in five dimensional hyperspace the Earth is flat.
Answer:
Completion B