Question

medicine from frogs
1 poison dart frogs are tiny frogs that live in south america. they are the size of a paper clip and come in many bright colors. the tiny frogs can be red, yellow, orange, blue, or even pink. these bright colors are a warning as if to say, \dont eat me!\ these cute little frogs are deadly. their skin contains poison. this poison protects them from predators. their usual location is the rain forest, but they also appear in research labs.
2 why would a frog with deadly skin be in a research lab? thats a great question! researchers are actually studying the frogs poison. although poison can cause harm or illness, it may also help. researchers test small amounts of the poison as medicine. they test it by mixing it with other chemicals to make the poison safe in small amounts. researchers think that in small amounts, the poison could help reduce pain. it also could help muscles relax.
3 researchers are looking into other ways the dart frogs poison could become medicine. you never know where you might find something in nature that is useful to people!
4 which sentence from the text shows one way that poison dart frogs could be useful to people?
a. \they are the size of a paper clip and come in many bright colors.\ (paragraph 1)
b.
esearchers think that in small amounts, the poison could help reduce pain.\ (paragraph 2)
c. \these cute little frogs are deadly.\ (paragraph 1)
d. \the poison protects them from predators.\ (paragraph 1)

Explanation:

This sentence directly states a potential beneficial use of poison dart frogs' poison for humans—pain reduction, which matches the question's request for a way the frogs could be useful to people. The other options only describe the frogs' appearance, danger, or self-defense, not a human application.

Answer:

B. "Researchers think that in small amounts, the poison could help reduce pain" (paragraph 2)