need some more info to answer
Answer:
Your answer would be D.
Explanation:
The sentence that contains a dangling modifier is D. A dangling modifier is a word or phrase that modifies a word not clearly stated in the sentence. In the sentence above, "preparing for the experiment" is a present participle expressing an action but does not name the doer of the action. In English sentences, the doer of the action must be the subject of the main sentence. However, the doer of the action is not "several slides" (the subject of the main clause). Slides do not have volition, so they can't prepare an experiment.
As the doer of the action is not clearly stated, the participle phrase is said to be dangling. Consequently, you should name the appropriate or logical doer of the action as the subject of the main clause. In this case, it could be an NP such as "the scientist" or you can turn the whole sentence into a when clause --> When the scientist was preparing the experiment, several slides...
Answer: When I felt my wings were ready, slid from our home branch as smoothly as a snake through the grass.
Explanation: This sentence is comparing two different things to each other and it uses the word as. A simile must have the word like or as in it, otherwise it is a metaphor.