Answer:
The answer would be C.
Explanation: The reason why is because it wraps up the paragraph neatly and doesn't leave the reader with any questions.
frogs are funny because they're just one big mouth with enough leg to throw the mouth at food
The correct option is the second one.
"To complete her Week 3 Discussion, Sharon isolated herself from her family, which finally made them realize she needed to concentrate."
It is a quote made when slavery was there is the United States, when most of the people tried to discriminate people on the basis of their race.
If you're asking in Grammatical aspect, then there is nothing complex in this sentence, just means, that if you are black that it's a bad thing [ just by this quote ]
Hope this helps!