【单选题】In Paragraph 1, the sentence 'The most daring toddlers feel content if they' can hold onto what they already know' can best be described as having which of the following effects on the reader?
A.
It focuses the reader's attention on the wide variety of children's fears.
B.
It informs the reader of a specific type of fear.
C.
It helps the reader understand children's fears from an perspective.
D.
It allows the reader to decide how best to handle children's fears.