I am laughing at her and my voice changed. I'm not sure if you wanted me to correct that sentence you have a very unclear question
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.
Her marriage to Walter has problems, but she hopes to rekindle their love.
C. her scent
Best regards from,
Darrin90b