The closing of the recreation center has been strongly protested because the center provides a gathering place for community members, offers activities to senior citizens, and a number of continuing education classes for adults are hosted there as well.
Structure: The closing of X has been strongly protested because X provides A, offers B, and hosts C.
I was looking for this structure in the answer choices. This structure presents the causality why in the first place the closure of the center was protested. The components of the lists are parallel as well.
Also, it clearly conveys the intended meaning of the sentence.
The closest Option C uses hosting in the last component of the parallel list which gives rise to a parallelism error.
I am not sure if this is a typo or this can be the correct answer. Maybe
generis can elaborate further.
I am aware that a verb-ed modifier can be parallel to a verb-ing modifier given the context demands so.
But never seen a structure such as this so far.
As other choices suffer fatal flaws I would still go with C although hesitantly.
IMHO C