An old misunderstanding exists among the two families so they are not friendly anymore.

Options

A. has exist within the two families
B. No improvement
C. exists between the two families
D. will exist among the two families

Answer

C

Explanation

.exists between the two families. should be used. When exactly two entities are specified, "between should be used. However, when more than two entities are involved or when the number of entities is unspecified, the word choice depends on what you want to say. .Between. should be used where the relationship is distinctly one-to-one.