Question

read the passage. then, select the synonym of the word in bold. as the sun began to set, the island castaway was barely able to discern a ship on the horizon. did that mean that someone onboard the ship might be able to notice him, too? he jumped to his feet and frantically waved his arms, yelling, \over here! over here!\

Explanation:

The word "discern" means to see or notice something with difficulty. "Perceive" has a similar meaning of becoming aware of something through the senses.

Answer:

Perceive