Is the bold clause or phrase a dangling modifier? O Perry the Platypus's training classes were attended
before becoming a yo-yo expert.
Dangling Modifier
No Error
k

It is a dangling modifier.

Explanation:

I'll assume that the bolded phrase was before becoming a yo-yo expert.

A modifier is a word that gives more information about another word. A dangling modifier is a modifier that could be misinterpreted as being associated with a word other than the one intended. Accordingly, in the given sentence, we could think that the phrase before becoming a yo-yo expert could refer to the training classes instead of Perry the Platypus.

a. all of the other answers have at least one capitalization error.

jenkins wanted the narrator to write a ghost story for his magazine. he wanted the narrator to give the readers a story based on the supernatural. he wanted him to give the readers real 'horror' stories and not the type of live ghosts which he had presented in his earlier stories.