Question

Which personal pronoun correctly completes the sentence?

Curtis stood between Mark and __________.

A.
I

B.
he

C.
him

D.
his

Answer 1

it is a

Answer 2

The answer can be A or C, depending on the subject referred to. Is there prior context?

Answer 3

it is a i checked

Answer 4

...Is there sufficient context to prove that?
Of course A does sound more logical, so I guess you're right.
"Him" sounds redundant without prior context.