Answer:
c) A cricket chirped somewhere in the darkness and lulled him to sleep.
Step-by-step explanation:
Past tense is a tense form of a verb where the action is done or already done. In other words, we use the past tense to talk about an action that has already happened sometime in the past.
In the given sentences, the sentence in the past form is sentence c. This is because the verbs used are in their past form- "chirped" and "lulled". And the sentence reveals that the chirping of the cricket helped put him to sleep, an action that is done or finished.
Thus, the correct answer is option c.