1.Which organ controls the muscle movement of our body like walking ang writing?
A.bone
B. brain
C. Heart
D. Muscles

2.Which organ pumps blood throughout the body?
A. Heart
B.Intestines
C. lungs
D. Muscles

3. Which of the following is the function of lungs?
A. Allows our body to move
B. filters the oxygen that enters the body
C. Process information and sends instruction
D. Allows the food to be broken down into nutrients.​