Answer:
Rainsford is strong and determined. The text that proves this would be "With his remaining strength, he dragged himself from the swirling waters.
Jagged crags appeared to jut up into the opaqueness; he forced himself
upward, hand over hand. Gasping, his hands raw, he reached a flat place at
the top."
Explanation:
Read through the passage and look for text that displays his personality, such as actions, speech, etc. Hope this helps!