What is the participle in this sentence?

The laughing child looks happy, but she was sulking this morning.

A.
happy

B.
looks

C.
was sulking

D.
laughing

Respuesta :

The correct answer is D, 'laughing'. 
A cannot be correct because that is an adjective.
B is a verb.
C is also a verb used in past progressive tense. Since both words are given here, it cannot be the correct answer. If it said only 'sulking', then it would be a participle. This way this is not a correct answer.
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