Answer:



Explanation:

The correct intransitive verb to fill in the blank is option A) "play". Intransitive verbs do not require a direct object to complete their meaning. They express an action or state that does not transfer to an object.

The sentence states that "The boys _______ in the backyard on Sundays. All their friends join in too." This means that the boys engage in an activity in the backyard on Sundays, and their friends also participate in this activity. To correctly fill in the blank, we need to choose the verb that expresses the action performed by the boys without requiring an object.

Let's analyze the other options and why they are incorrect:

- Option B) "plays" is incorrect because it is the singular form of the verb "play". The subject of the sentence is "the boys," which is a plural noun, so the verb should also be in plural form.

- Option C) "playing" is incorrect because it is the present participle form of the verb "play". Present participles are used to form progressive tenses or as adjectives, but they cannot be used as the main verb in a sentence.

- Option D) "played" is incorrect because it is the past tense form of the verb "play". The sentence is describing a habitual action that occurs on Sundays, so the present tense form of the verb is required.

In conclusion, the correct intransitive verb to fill in the blank is option A) "play." This verb accurately conveys the action of the boys engaging in an activity in the backyard on Sundays, with their friends also participating.

Plays