This might sound stupid but may you explain more in comments will get back to you if you comment I will answer
I think it is A because I have this question before and I know it already.
Helping verbs<span> are </span>verbs<span> that, as their name suggests, help the main </span>verb<span> in a sentence by extending the meaning of the </span>verb<span>. They add detail to how time is conveyed in a sentence. As a result, </span>helping verbs<span> are used to create the most complicated </span>verb<span> tenses in English: the progressive and the perfect aspects.
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Answer:
in the morning, we hiked the trail to the falls
D- they canot live very long