Final answer:
The correct answer is B) is present.
Step-by-step explanation:
The correct answer is B) is present.
In this sentence, the subject is the collective noun 'Every boy and girl'. Collective nouns are treated as singular and require a singular verb. Therefore, the correct verb form to use is 'is present'.
For example, you could rephrase the sentence as: 'Every student is present in the class today.'