Which statement is true about the two stars labeled in this diagram?

answer; ///i do believe that the correct answer is (c) hold atoms together to form compound;

significant amounts of nitrogen oxides, carbon monoxide, and other pollution

explanation:

passenger vehicles are a major pollution contributor, producing significant amounts of nitrogen oxides, carbon monoxide, and other pollution. in 2013, transportation contributed more than half of the carbon monoxide and nitrogen oxides, and almost a quarter of the hydrocarbons emitted into our air.

the correct answer, according to e2020, is the second choice there is an occluded front in region a and a cold front in region b.