Answer:
D) The college offered many extra-curricular activities for students such as canoeing, kayaking, hiking, swimming, and jogging.
Step-by-step explanation:
Parallel structure allows a sentence to flow smoothly in an identical way. Notice how in this sentence, all of the activities end in -ing. The sentence is completely uniform in its use of tense. For example, A does not follow parallel structure because the "the dogs are fed by him" does not follow the structure of the rest of the sentence, as that part is in passive voice while the rest is active voice.