What do you think the speaker refers to when he says “If you had known what I know”?

the speaker refers to if you had known what I want to do you would be happy and you will support me

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.