What does the word "that" in para...

Câu hỏi: What does the word "that" in paragraph 3 refer to?

A. The differences between boys and girls begin at birth and continue throughout childhood.

B. People often give pink clothes to a boy and a blue blanket to a girl.

C. Many people give girls dolls and miniature kitchen and boys receive action figures and construction sets when they were born.

D. People give different genders of children distinct kinds of presents or clothes.