What is the central idea in the memoir "Primary Lessons" from Silent Dancing: A Partial Remembrance of a Puerto Rican Childhood?

A young girl must leave behind the freedom of summer childhood to start school for the first time.

When her family leaves the United States, a young girl experiences homesickness for the first time.

A young girl struggles to fit in with family and friends who are part of a different culture.

When her family moves to Puerto Rico, a young girl learns important values of her native culture.