Answer: Intravenous route.
Step-by-step explanation:
Intravenous route.
Administration of Chemotherapeutic drugs are best achieved through this route because the drug goes directly into the circulatory system, this enables the drug to enter the body quickly since most chemotherapeutic drugs are easily absorbed through the blood stream.
Intravenous administration offers the most rapid absorption time compared to all other available routes, also flexibility with drug dosing provides an optimum advantage.