(C). Strolling in the park on a summer afternoon.
There is no subject in this sentence, so you don't know who or what is strolling in the park.
No, you dont "need this quick". you need to do your own homework. it's number one, take the two seconds it takes to do your own homework instead of botherig us. please.
D is the correct answer :)
will be going to that is the answer