Please give me answer please ​

Maintaining a healthy weight allows the respiratory system to work more effectively because a. oxygen is being delivered more adequately. b. the heart does not have to pump as forcefully. c. the capillaries are constricted. d. the lung capacity allows for small amounts of air.

Name two drugs that work to cause change in the nervous system

The goal of the flu vaccine is to prevent you from becoming infected with influenza. select the best answer from the choices provided. t f