The relative clause in the given sentences are shown in option (d) or (iv): "that serve the needs of the population"
<h3>What is a relative clause?</h3>
"Who, whom, that, and which" are relative clauses. These can also be referred to as Relative Pronouns, and they are used to provide more information about a place, person, or thing.
Therefore, In this statement, you could alternatively use which instead of that.
Check out the link below to learn more about the relative clause;
brainly.com/question/766213
#SPJ1
I see nothing wrong with your writing. It’s really good all I would do to make it better is to find synonyms for the basic words in there.
Hope this helps
.................................... .................................... ....................................
Answer:cause and effect
Explanation: the things he does causes and effects bad things in the story