Correct Answer: C
Explanation:
There are two main issues in the original question.
(1) Since there are only two options for the important choice, one must use whether not if
(2) The new administration is a singular noun and cannot be referred to with the plural pronoun they
A. if must be replaced by whether since only two options exist for the choice; the plural pronoun they improperly refers back to a singular noun (i.e., new administration)
B. present moment is redundant as both words convey the same meaning
C. whether is properly used instead of if as only two options exist; the singular pronoun it properly refers back to a singular noun (i.e., new administration)
D. the plural pronoun they improperly refers back to a singular noun (i.e., new administration)
E. the phrase the advancement of is unduly wordy and should be replaced by to advance