What Does the Research Regarding "The Munchies" Demonstrate in Addition

Multiple Choice

What does the research regarding "the munchies" demonstrate in addition to possible development of drugs that can assist in weight control?

A) Researchers should not depend on real-world observations.
B) Researchers can use the information they have now about endocannabinoids only for expanding research regarding weight control.
C) Research progresses from real-world observations to a productive research agenda.
D) Real-world observations always lead to hypotheses that cannot be tested.