Answer:
b. one main idea in a topic sentence.
Explanation:
A strong paragraph is one in which a main idea is developed from a topic sentence.
A topic sentence is that sentence which paragraph is built on.
It conveys the meaning in any given paragraph. They carry the main idea in any paragraph.
HEY THERE !!
CORRECT ANSWER IS ( D ) WE TOOK SHELTER UNDER AN OUTCROPPING OF ROCKS.
HOPE IT HELPS YOU.
The antagonist is the island itself, but the closest answer is B