The hummingbird shown here must beat its wings repeatedly to hover over flowers and drink nectar. What force does the beating of the hummingbird's wings overcome?

Gravity

Explanation:

The hummingbird beats its wings to hover as it is pushing against the force gravity to hover. E.g. Without gravity an apple would never fall as it is the force that causes it to do so.

the autor of the text is bringing the point that one achievment of the president john f. kennedy was a success and this caused the next president to use a similar idea. the purposefor the use of the quotation in the text is to support the idea that peace corps was a result of the president's call. in this case, the quotation is presented as part of the writing and does not stand on its own.

answer a.