Read the passage.

"I wouldn't leave an ant in that place," he said. "So I brought."

Mrs. Lacey was smiling at him and shaking her head as if she would never, ever, understand him.

Which is the mood of this passage?

A. panic and suspense

B. surprise and joy

C. anger

D. indifference

The mood of the passage is the one that follows:

B - surprise and joy.

Mrs. Lacey smiles at the other character, and it is clear she's being true, since right after it she shakes her head in order to show her inability to understand the other character's action of bringing an ant with him. Mrs. Lacey is not angry or upset, but feeling in the same way mothers do when their kids do weird things they are not able to understand due to generation gap, to their kids' immaturity, among other things.