Its Is used for repetition AND summary
I would say the correct answer is girls had laughed a little nervously.
Based on this clause, we can deduce something about their personality, and that is that they are happy kids who want to laugh all the time but they are not allowed to. The other options are either direct characterization or not characterization at all.
Answer:
b. dolphins appear to be highly intelligent animals.
Answer:
which one? book one or two
Explanation:
sorry i need more context