In the Kreb cycle, energy is needed so D is wrong. The first reactant and last product are the same which causes it to be cyclic so the answer is C
They might lessen the symptoms
The answer is watershed.
sorry if I'm wrong.
Testicular cancer or cancer of the testisoccurs when cancer cells form in one or both testicles. These cells begin to change and grow uncontrollably, forming a mass or tumor. The cells can also invade the blood stream and lymph system and spread, leading to tumors in other areas of the body called metastases.