"<span>The feud between the Montagues and the Capulets is the conflict, and it is resolved by the deaths of their children" is the best option but using the word "solved" here is a bit misleading since the rivalry continued. </span>
⇒ <span>Antagonist:
1. An opponent or enemy in a story
</span>⇒ <span>Protagonist:
</span>1. The main character in any story, such as a literary work or drama.
<span>2. </span>A leading person in a contest; a principal performer.
<span>3. </span>An advocate or champion of a cause or course of action.
Rainsford is the protagonist in the story.
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>