Answer:
Letters A and C are the correct answers.
Step-by-step explanation:
A participle phrase is a group of words formed by a verb and a predicate; however, it is not an action but a description. These type of words are called verbals, and there are many cathegories such as gerunds.
In letter A, "dented from too many tumbles of the nightstand" is a phrase that does not indicate and action but modifies "the alarm clock", meaning how the clock was and not an action done by it.
In letter C, "stretching her arms" modifies how Akiko yawned, meaning that the main verb is "yawned" and "stretching" a gerund, identified by the ing ending.