What is gladwell’s purpose in the last part of the chapter 9? how does he achieve this purpose?

Gladwell's purpose is to pinpoint that by sacrifice, children should have equal opportunity to achieve success.

Explanation:

Gladwell pointed out that summer vacation is one of the major challenge to education in American. Stating categorically that summer break unconsciously segregate higher income children from lover income children. Because during  summer vacation, children who cannot afford the demands are mostly unproductive. Thus, it a period of a wasted time for them.

He was able to achieve his purpose by stressing that success requires giving children equal opportunity, and this is possible by sacrifice, giving those who do not have the opportunity a chance.

i don't know sorry i cannot read a novel in 30 min.

explanation:

but just in case i think the answer is b.