50:02 Bill needs to ask Jessica, or he may never know the truth.

What kind of sentence is this?

a fragment
a simple sentence
a compound sentence
a complex sentence

its a compound sentence

Explanation:

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.