agree since age is just a number so whatever ur age was u can succeed your goal with hard work and patience
D. The thesis. It's going be your statement that you're trying to prove.
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.
We need more information! : ) I'll gladly help though!