Correct option is B
The correct option to fill in the blank is
(b) spread.
Explanation: The subject rumours is
plural, and the adverb “usually” indicates a
habitual action, which takes
simple present tense.
Grammatical Rule Used:
· With
plural subjects, we use the
base form of the verb in simple present tense.
· “Rumours” + “usually” implies regular habit → Rumours spread.
Example:
Good news travels fast.
Rumours spread quickly.
Incorrect options:
· (a)
spreading – present participle, requires helping verb.
· (c)
spreads – singular verb, used with singular subject.
· (d)
are spreading – present continuous, doesn't fit habitual context.