[Q]: How does the sentence end?

Jason wanted Kenneth to start using organic products, because 

[A]: Jason felt they were safer for the environment.


[Q]: How does the sentence end?

Neil threw discus for the high school track team while Michael did the high jump. 

[A]: Neil had stronger shoulders.


[Q]: How does the sentence end?

Michael wrote Steven a letter of motivation, because 

[A]:
Michael knew  was going through a hard time.