Is that the book that I have to read to get the answer to the 7 events?
Answer:When looking for a new pet, there are many options, some people might choose a lizard, a hamster, a bird, or more commonly a dog, but I'm here to tell you why cats are a better option than any of those.
Explanation:
Well, in this sentence the subject is 'he', I think you gave us the wrong options here. :S
The correct answer is b. people who gather census information
Even though enumerators might have made mistakes the data sticks, and the enumerators are people who collect the data about the census.
