Aerobic exercise is important mostly because it strengthens this part of the body.
a. the brain
b. the heart
c. the lungs
d. the biceps

Sole i will mark brainlist to who answer

Which factor determines the organization of political parties at the local level

How has u. s. participation in international economic development efforts affected other countries? o a. it has made some countries decide they no longer want close ties with the united states. b. it has ended diplomatic ties with countries that refuse to participate. c. it has raised money to poor nations grow their economies. d. it has caused the united states to intervene militarily to stop human rights abuses.