Which sentence uses correct parallel structure?

jake was elected student council president because he is a natural leader.

smoking is harmful to you, others around you, and is expensive.

penelope looked down the street, in her neighbor's yard, and in the woods behind her house, but she could not find her puppy anywhere.

the team was doing lay-ups, dribbling exercises, and they were also running laps in preparation for the game.

on our vacation we went swimming and hiking, but not the amusement park.

"On our vacation we went swimming and hiking, but not the amusement park" uses a correct parallel structure

Explanation:

Of the given sentences, the sentence “On our vacation we went swimming and hiking, but not the amusement park.” Primarily explains the parallel structure because the meaning of the sentence given is that the group of persons were performing swimming and hiking with equal importance but visiting the amusement park were not exactly their cup of tea.

This explains that the group gave more importance to swimming and hiking but not to visiting the amusement park. This explains the parallel structure of the sentence.

the mood is annoyed. they wish sandy was there do to the job right and since they dont like they way it came out now they are annoyed.

life will not be easy it will be filled with war, lack of resources, damaged planet, and lack of land to live on.

i imagine life will be easier in the sense that we will have better technology and better health and medical advances as well as infustructure growth and economic resilliance we will have much stronger militaries and probably be constintly fighting with other countries for resources and lang that is actually cleanenough to live or farm on . as well i think the need for fresh water will only brainliest answer lol