The presentation which most likely shows the purpose of cause and effect is option C. The ways that El Nino changed weather patters around the world. This presentation highlights the causes of El Nino, how does it happen, and what would be its effects to the people around the world.
I think the error is "is going to," to be replaced with will.
"The Committee will give their vote on Tuesday."
C Because it tells a lot on,a little