Question

pronoun case:
a friendly competition between my sister and
i began when we took to the courts and
played three sets of grueling tennis.
a. no change
b. my sister and me
c. she and i
d. she and me

Explanation:

To determine the correct pronoun case, we analyze the preposition "between". Prepositions take objective pronouns. "I" is subjective, while "me" is objective. Also, "my sister" is a possessive - noun phrase, and we need a consistent objective pronoun. "My sister and me" uses the objective pronoun "me" correctly after "between". Option A uses "I" (subjective) incorrectly. Option C uses "she" (subjective) and "I" (subjective), which is wrong. Option D uses "she" (subjective) which is incorrect as we need a pronoun that matches the possessive - noun - phrase structure in terms of case after the preposition.

Answer:

B. my sister and me