Primarily known for his theory of relativity, _________
Which choice completes the text so that it conforms to the conventions of Standard English?
the Nobel Prize in Physics was awarded to Albert Einstein in 1921.
Albert Einstein was awarded the Nobel Prize in Physics in 1921.
1921 was the year Albert Einstein received the Nobel Prize in Physics.
Albert Einstein's receipt of the Nobel Prize in Physics occurred in 1921.
Correct Answer: B
Choice B is the best answer. The introductory phrase "Primarily known for his theory of relativity" describes a specific person. "Albert Einstein" is the correct subject.
Choice A is incorrect because "the Nobel Prize" is not known for the theory of relativity. Choice C is incorrect because "1921" is not known for the theory of relativity. Choice D is incorrect because "receipt" is an abstract noun, not the person known for the theory.