The third choices does not contain a run on sentence due to there being 2 sentences in the answer choice.
Lightheartedness means cheerful, carefree ect.
This means the line "The sounds of water splashing and laughter echoed in the distance; Tim's friend's had gone for a late-night swim." is the phrase that is the correct answer, since it talks about the happy actions of Tim's friends.
Answer C.
Answer:
1. Teachers have a limited amount of time to “interact” with Students.
2. The facilities were hopelessly “Inadequate”.
Explanation:
Answer:
i-Run fast or you will miss the train.
ii-We respect him because he is an honest man.
iii-We drove very fast so we soon overtook our friends.
iv-She will get the price because she deserves it.
v-You should speak politely because you may offend someday.
vi-He looks ordinary so he is very popular.
I'm pretty sure these are correct.