Answer:
C). Sentence 5
Step-by-step explanation:
As per the question, sentence 5 must be deleted from the given paragraph as it offers information that is irrelevant to the context of the paragraph. The central idea of the author is to provide historical details regarding the Oval Office that is built in the White House's West Wing and the details associated with president Hoover's wife are irrelevant and insignificant. Thus, option C is the correct answer.