Select the adverb clause from the drop-down menu to complete the sentence.

scientists raised the black-footed ferrets in captivity

1. until the ferrets could return to the wild.
2. which control the prairie-dog population.
3. , ensuring the species' survival.
4. because of their status as an endangered species.

the correct answer is c. he speculates on what might happen at given points in the future in a world without people. alan h. weisman is an american author, professor, and journalist. authors organize their information with a purpose. they present their ideas in an organized way. this is called text structure. weisman uses text structure so as to improve overall comprehension and to prove his points.

an old person

explanation:

i believe that the answer is b! i hope i out!

what makes a hero is someone who tries and acres and then to save people and it’s not their jobs to save them just a normal person that has no experts of saving people would jump in to action without it twice about doing it. me that’s the defection of a hero!