The correct answer for this question it this one: "<span>A. However." </span><span>The paragraph uses "compare-contrast" organization. The paragraph itself gives us the differences and similarities of coal and petroleum. Words such as the "on the other hand," "while," and "however" can be used as signals or clues that the paragraph is organized as compare-contrast one.</span>
"<span> b.)proves something" The supporting text proves the text with evidence.</span>
I think that it is Problem/solution
I don't know, where are the statements.
