select the misplaced or dangling modifier. upon removing a leather - bound photo album, the bookshelf spun…

select the misplaced or dangling modifier. upon removing a leather - bound photo album, the bookshelf spun around slowly to reveal a hidden chamber.
Answer
Brief Explanations:
A dangling modifier is a word or phrase that modifies a word not clearly stated in the sentence. In this case, "Upon removing a leather - bound photo album" seems to imply that the bookshelf is doing the removing, which is illogical. The doer of the action of removing is not specified.
Answer:
Upon removing a leather - bound photo album