Chapter 7. What makes Ishmael laugh for the first time in a long time?

I can't seem to access the page, but the answer to this question can be found on Page 47.

Got it, he laughed because he didn't have the stength to climb a coconut tree. It didn't matter how many attempts he made, he just couldn't climb. The thought of not being able to do something he'd done so easily a few hours before made him laugh uncontrollably.