C.
Explanation: A long term goal and a short term goal can both be achieved in the future, an unrealistic goal cannot be achieved at all. A realistic goal is the best answer.
The answer that would best complete the given statement above would be the KIDNEYS. Yes, you are right. <span>The main process of excretion takes place in the kidneys. The kidneys filters the blood and this is the one responsible for excreting the waste products in the body in a form of urine. Hope this helps.</span>
Less sleep
not eating healthy
no exercise
