Answer:
C, annoying
Explanation:
I found my answer by evaluating the words and how they would fit into this sentence.
We know that Mona bothers her older sister.
We know we need a description word that explains her character.
Static-Static is, in the context of this situation, very boring and of no personality. Mona might be static if she is very dull, doesn't talk or laugh a lot, and doesn't have many interesting things to share. This is not the case.
Dynamic-Like static, the word dynamic is not correct either. Dynamic is the opposite of static, and it indicates someone very fun, exciting, and has lots to say and talk about. Mona might be this way, but this is not what the sentence is about at all. It is not dynamic.
Annoying-In my opinion, I think this is the best answer. Mona constantly bothers her older sister, therefor she is annoying. It is annoying, c.
Silly- Silly could be used here, but it is important to note that the word silly would more be used if Mona often told jokes or played pranks. The fact that the sentence specifically highlights the word "bothers" indicates that Mona is not silly.
