Although 25% of Prescription Drugs Are Derived from Plants, Interest

Multiple Choice

Although 25% of prescription drugs are derived from plants, interest in self-treatment using herbs has been on the rise. Which of the following is the reason for this?

A) Prescribed drugs are subjected to federal regulations.
B) Herbs are easily available.
C) There are differences in molecular structure between the source plant and the synthesized drug.
D) Using only parts of a plant may not have the same effects as using the whole plant.