"closed his eyes and gulped." "His stomach was full of butterflies, and his palms were wet." and "as he shakily stepped onto the ride." all show Owen being nervous.
A. True! Slang and colloquialism both mean speaking casually with conversations as opposed to formally.
Two sentences have spelling errors
The first one is “I was grateful my ‘friend’ offered me an umbrella.” Here, friend is spelled incorrectly.
The second is “he had never given it much timought.” I’m not sure what that’s supposed to say, maybe time or thought, but it is spelled incorrectly either way