Multiple choice

The basic life process that obtains energy from food for the proper functioning of the body is _____.

  1. respiratory system

  2. digestive system

  3. circulatory system

  4. skeletal system

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The digestive system breaks down food into nutrients like glucose that provide energy for body functions. While the respiratory system exchanges gases, the circulatory system transports substances, and the skeletal system provides structure, only the digestive system directly obtains energy from food.