In
the sentences given, the sentence in which the verb agrees with the subject is
letter C: Both daffodils and tulips are blooming in the garden. Letter A and B
uses ‘Either..or” which means it could be one of them that agreed while the
other is not agreeing. Verbs are simply known as the ‘action’ words – may it
be mental, physical or mechanical. When verbs are paired with auxiliaries
(helping verbs), they are known as verb phrase. These helping verbs always go
first before the actual verb.