Introduction (Hook, Thesis, thematic Statement)
Body Paragraphs(Explanation)
Conclusion(Restate Thesis, summarize essay)
The answer would be D. You Don’t have much time to think
The sieve filters the sand and you get resources out of it.
If you look at a dictionary to substantiate is to support an opinion or claim with proof or evidence. So a Substantiated opinion is an opinion that is backed up with proof.
Hope this helps :)