The correct answer is C. The adjective clause modifies "the MP3 player"
In my opinion, the correct answer is <span>B. Sheila visited Paris last summer and climbed the Eiffel tower. A parallel structure in a sentence requires use of two or more instances of the same grammatical form; so, if it is, for example, simple present tense, it should be consistently used in all the clauses. In this case, we have perfect tense in both clauses, which makes these two actions parallel.</span>
Litterally just use cute emojis✈️