A hook. Hope this helps! :)
Surprisingly, his hands and feet are bigger than normal, which helps him move quickly through the water.
What is the genre? that's what you first need to ask.
Context clue means other words in the story that helps the reader understand what the word means.
in this case, u need to find words in the story that helps the reader understand what the word "grabbed" means.
and I can't exactly give you the context clues because I don't have the story