Final answer:
The underlined verb 'look' in the sentence 'The soccer players look exhausted' is a linking verb.
Step-by-step explanation:
The underlined verb 'look' in the sentence 'The soccer players look exhausted' is a linking verb. Linking verbs are verbs that are completed by a subject complement, which can be an adjectival or a noun phrase that describes or identifies the subject. In this case, the subject complement is 'exhausted', which describes the soccer players.