C I’m guessing here just guessing
Rewritten:
My Mother is my idol for me. She does everything she can for her family. She teaches me important things. She looks like a beautiful shining star in the sky. I want to be like her. She takes care of our family the best she can. When i am sick, she takes care of me and hopes i get better. She loves me and worries for me. Today i will study hard for her. She makes my family feel warm. I am always happy to be with her. These are the reasons why i love her. These are the reasons that makes her my idol.
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.
