Answer:
The correct answer is option C.
Explanation:
Chemotherapy is a treatment that involves the high power or intense level of chemicals that inhibit the cells dividing or killing the such cancerous cells to treat cancer, however such chemicals leads to the various side effects in individual while lowering the symptoms of cancer.
This therapy involves side effects due to powerful chemicals which led to the effects such as loss of appetite, loss of hair, nausea, vomiting, and many other.
To limiting these adverse effects chemotherapy can be adjusted to optimize effects.
Thus, the correct answer is option C.