Read the sentence from Wonder by R. J. Palacio.

"Mrs. G's actually the one who runs the place," said Mr. Tushman, which again made all the grown-ups laugh.

This description suggests that Mr. Tushman

The description suggests that Mr. Tushman depends on Mrs. G.

Explanation:

The children's story Wonder by R. J. Palacio tells the story of August "Auggie" Pullman and his experience as a child with a medical condition that left his face a bit disfigured. Narrated by the young boy himself, he takes us through his life in school and among friends and also surrounded by his overprotective family.

From the given passage, Mr. Tushman, the headmaster of Beecher Prep School, said it was "Mrs. G's actually the one who runs the place". This description of Mrs. Garcia, who is an assistant to Mr. Tushman, shows that Mr. Tushman is dependent on his assistant, Mrs. Garcia, who the children fondly refer to as Mrs. G.  

to give the reader a sense of the chaos, fear, and havoc taking place

often a noun phrase is just a noun or a pronoun:

people like to have money.

i am tired.

it is getting late.