I think that it is a or c you choose have a great day!
People can face challenges like judgement and inequality when establishing a new colony/society/world.
The topic sentence is usually always in the first sentence of a paragraph. If you are meaning the book or any representations of the novel
<em>the other term for this is <u /><u>sparsely populated..
</u>mean the area under observation does not have enough crowd or people... they may be audience in a cinema or public or citizens in a city...<u>
</u></em>