Answer:
D. Opened the window and leaned out.
Explanation:
It doesnt have a peron like who opened the window so this isnt a sentences
Answer: They emphasize the statement and make the character seem childish
The sentence that sounds the best when you read it out loud is:
C. Summer vacation came as a relief to the student, who was tired of studying and writing research papers.
If you read all the sentences out loud they all sound weird except for this one.