Well a paragraph is a group of sentences that center around a topic or Central Idea So the answer would be B because if the story is about space and a there is a paragraph about horses that isn't a proper essay and you always need to stick with a central idea to get an A+
One of the answers that could fit in the blank is better.
Hope this clarifies your doubt.
Run faster maybe or jump higher to win
I don’t know why you care about how other people think you look. All that matters is that you love yourself. Your opinion is the value able one. Life isn’t about looks. Life is what you make it. OTHERS OPINIONS ARENT THE VALUE OF YOUR SELF ESTEEM.