C. Medical History of Individuals.
The census only really cares about numbers. Individual conditions don't matter to them. Also, all the other info is needed by the census for redistricting every 10 years.
Answer:
It occurred during the 1870s to about 1900.
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An unanimous declaration is writers that are in a complete argument.
Answer:
While I was eating my lunch, a squirrel hopped up on the railing and chattered at me
Explanation:
The best revision of the original sentence would be option A. This is because it leaves no room for ambiguity or confusion unlike the other options.
The other options give the impression that the squirrel was the one eating the lunch, instead of the narrator.