Answer:
to reproduce, create offspring, and keep humanity growing
Explanation:
Engaging in intercourse and creating offspring ensures that mankind will not become extinct.
i'm unsure of your statement, but i believe that the statement is false. A rake would add more physical activity, since you're using both leg muscles while walking, and arm muscles.
The answer would be social environment. Claire of course lost the weight because of her hard work but the encouragement from her friends definitely helped motivate her.