He needs to improve his endurance
Answer:

Explanation:


Using the algebric identity
So,


Denial. because he makes excuses talkin bout its just cus its stressful at work like no bro you got anxiety.
Alveoli small balloon-like structures which are responsible for the oxygen exchange in the lungs across the membranes. These are attached to the branches of the bronchial passages. These alveoli inflate and deflate with inhalation and exhalation. Answer is C.