Your answer would be:
US citizens are required to (options not shown). (Voting) is a privilege that only US citizens can exercise, but it is not required.
hope this helps :)
Answer:
I think it is not ethical. The best explanation for this is the addiction, and lust people have for both. Children will grow to notice their parents consuming these products, and they will follow in their parents footsteps.
A because C is sequence because of the transition words (first and then). F is problem and solution because the problem is that u need money then it gives u a solution to how to get it. Then B is description because it tells u information about being a car owner, so it only answer left is A
Phase, in thermodynamics, chemically and physically uniform or homogeneous quantity of matter that can be separated mechanically from a non-homogeneous mixture and that may consist of a single substance or a mixture of substances
(hope this helps ^^)