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.
The correct answer is phrase, option D. A group of words that functions as a part of speech, but lacks a subject or a predicate is a phrase. It is a conceptual unit, and is only a part of a clause. Examples of phrases are: department store, my children, believing in fairies, and a big, black wolf.
Answer:
B.
a presentation about life during the Industrial Revolution
Explanation: