Select the correct subordinating conjunction to complete the sentence. he did to study for the final exam must have been ; his grade improved from a b to an a. which that so what whatever

Answer : Whatever

"Whatever he did to study for the final exam must have been helpful; his grade improved from a B to an A." The correct subordinating conjunction used is "whatever". A subordinating conjunction is used to connect a subordinate clause to a main clause and create a complete thought within the statement.  The subordinating conjunction “whatever” is being used in the statement to show “ a student’s great effort to study no matter what for the coming exams”.

Hospital, bank, museum, cinema,park,restaurant