This is called, "First person narrative".
Answer:
A) Parks can help us understand humanity's relationship to the natural world.
Think of verbs as "action words" done by the subject. The subject in this sentence is "we". What did we do? "We" "heard" and had "seen". So the verbs would be "heard" and "seen"
The answer is A. to entertain
Answer: He walked to town to the nearest gas station.
Explanation: I'm assuming the last 4 sentences are the answer choices, and considering the other choices wouldn't make sense since there were no other motorists, his spare tire was flat, and his cell phone battery was dead, the only option would be for him to go into town since he was close by. Hope that helps!