Zoe, a nutritionist, is giving a presentation about childhood obesity to a group of teachers. She ends her speech with this statement: "We can do better. We must eat healthier and exercise. Will you join me?” This is an effective conclusion because it

leaves a lasting impression for the audience.
gives supporting details for the main idea.
establishes the main idea of the presentation.
gets the audience interested to hear more.

Also The answer is A) leaves a lasting impression for the audience.
Thx me latter!