What was John Adams greatest asset?

While John Adams would go on to serve as the second President of the United States in 1797, his greatest contribution came in the form of his ability to rally Americans around the cause of independence.

Explanation

the correct is answer is barack obama i had this answer on usa test prep lave a dont report or your lame

d is the correct answer.

b is incorrect because it makes food by itself

c is incorrect because us humans don't know how to produce their own food using the sun like plants.

a is incorrect because consumers can depend on carnivores for eating food for consumers to eat the dead organism. same thing with omnivores.