And i aver that,
use context to determine the meaning of the phrase in bold.
i have ascertained that or this one
i can confirm that im thinking this
i will instruct you that
i hope to learn that

the answer should be the first one. "many people find his lyrics very moving."

it by far makes the most grammatical sense and is very objective, removing any first person from the original sentence and keeping with the sentence fluency.

the rocket launch by showing how the population around it changes its behavior as the earth's influence over the martian planet when he uses the term "green star".

explanation: