Answer:
C. would be correct
Explanation: examples reasons and facts are all important to a supporting detail but transitions is not as important
Can it be based on anything ?
Most of the time, when you have a strong man, that indicates independence and a strong will. Strong willed people tend to stick to themselves and take care of themselves BY THEMSELVES. That's one translation lol
The answer is will because it is helping combine the sentence together.
In colloquial English 'them" would be acceptable
In formal English 'they' is used accompanied by the corresponding auxilliary verb
So, you could also say Is everyone who works in this store as helpful as they are ?