OE
A “realistic understanding of the potential boons—and perils,” or advantages and disadvantages, of the new drug requires that people know when they should and should not use it. In other words, the “contexts and symptoms” that are “appropriate” for taking the drug should be “delineated” or “stipulated,” both of which mean spelled out or specified. “Furnish,” which means to provide or to be a source of, might seem close, but one would not provide the times when the drug’s use is appropriate. Instead, the sentence suggests that people need to provide appropriate information about when the drugs should be used. “Outlaw” and “proscribe” form a pair, but one would be unable to ban or forbid “the contexts,” much less “the symptoms,” for using the drug. Finally, “transmute,” meaning to change in form, does not fit the context.
Answer: B,E