The correct answer is A. In her classic 1968 Chevelle, my grandmother has visited San Francisco, California; Bronson, Missouri; and Tampa, Florida this year.
Explanation:
Semicolons are commonly used to link two independent clauses but also in the cases of lists. Indeed, semicolons are recommended in the case a list or set of items of the same type includes items that are too long or include require punctuation such as commas.
This occurs in the sentence presented because the items "San Francisco California/ Bronson Missouri /and Tampa Florida" include a city and the state it belongs, and the city needs to be separated from the state using comma (inner punctuation) and therefore it is recommended to use semicolons to separate items clearly as "San Francisco, California; Bronson, Missouri; and Tampa, Florida".
