which of the following statements is true of complementary and alternative medicine (cam)?
a. It includes treating malaria with artemisinin that is derived from wormwood trees.
b. It opposes the use of marijuana to treat nausea, vomiting, and pain.
c. It includes treating cancer with the toxic drug laetrile based on sound scientific evidence.
d. It is a group of health care practices that are a part of conventional medicine.
e. It includes therapies that have no side effects or risks.