Which word in the sentence is a participle?

are you listening to that crying baby?

a.
listening

b.
baby

c.
are

d.
crying

Listening is the correct answer 

Participle- a word formed from a verb (e.g., going, gone, being, been ) and used as an adjective (e.g.,working woman, burned toast ) or a noun (e.g., good breeding ). In English, participles are also used to make compound verb forms (e.g., is going, has been ).

The quote would be the one the one