Answer:
D. Heroin is highly addictive and has no use in the medical field.
Explanation:
It’s has cell wall to keep it safe
An undergraduate college degree. Four years of medical school. Substantial, identifiable training such as a three- to five-year residency in an ACGME accredited program and several years of experience and proven competencies in the specific specialty or sub-specialty. A license to practice medicine.
It could be muscular endurance, agility, or coordination. But I'm thinking muscular endurance.