Yes, the helping verb is "has".
The sentence with a helping verb is 'c'. The helping verb in the sentence is had and the main verb is rested. Some helping verbs are has, be, was, were, did, and might. Helping verbs are verbs that are in front of a main verb.
Had is the helping verb. It helps the verb rested create the past perfect tense.
Yes had can be called an auxiliary verb or helping verb
she had rested on the dock
No, "rested" is not a helping verb. It is an adjective describing the state of someone who has had a rest or sleep. Helping verbs are used with main verbs to express shades of meaning, such as tense or mood.
Do is the helping verb: You do remember the helping verbs.
It is a helping verb.
Is will" a helping verb?
After the helping verb.
yep had is a helping verb
It is not a helping verb. It is a be verb, a past tense plural be verb.
Should is an auxiliary (helping) verb.