The sentence that has a mismatch between subject and modifier is the last one - Shortly after entering the museum, the mummy caught Kim's attention.
The way it is written, the sentence means that the mummy entered the museum, when it actually refers to Kim.
He’s going to fast, he’s gana die!
I'm pretty sure it's A "The verb tenses are consistent"
Imagery because he is describing what he is thinking, with detail