Analyzing literary text unit test seventh grade

Which sentence describes and I NTERNAL conflict
As Joe was walking down the hallway, the fear inside him made him freeze, and he couldn’t go on
Joe’s mother makes Joe wash his hands before dinner even if they aren’t dirty and now his hands are dry and hurt
Joe’s brother is constantly turning off the bedroom light even though he knows Joe is afraid of the dark
Joe made his way to the kitchen to sneak a cookie, but then he got there and they were already gone

The sentence that describes an internal conflict is:

As Joe was walking down the hallway, the fear inside him made him freeze, and he couldn’t go on.

This sentence shows that Joe is struggling with his own fear, which is an internal conflict.