I’m pretty sure it’s C. I know some teachers make you write an explanation so you could say that it combines both sentences and still keeps the details! I hope this helps!
C.) During the Renaissance, a period after the Middle Ages, several important inventions changed society.
Explanation:
This sentence combines both sentences in a concise manner while keeping the details and adding a natural flow to the reading. One way in which this sentence achieves this is by turning information from sentence B to an appositive phrase, which is a type of phrase that describes, renames or gives further information of another noun placed right beside it, in this case, that noun is “the Renaissance.”
B. The word haunted describes items of antiquity. As a boy and as an adult, the narrator peers anxiously at old, unused items that make him feel uneasy.