In each of the questions given below four words are given in bold. These four words may or may not be in their correct position. The sentence is then followed by options with the correct combination of words that should replace each other in order to make the sentence grammatically and contextually correct. Find the correct combination of the words that replace each other.

The staff (A) hoped to invigorate her principal (B) by giving them (C) spa coupons to use over (D) the weekend. 

Correct option is A

Among the highlighted words, “staff” and “principal” are incorrectly placed. The correct combination of words that should replace each other in order to make the sentence grammatically and contextually correct is A-B.
So, the correct sentence after rearrangement of words would be, “The principal (B) hoped to invigorate her staff (A) by giving them (C) spa coupons to use over (D) the weekend.”