Topic: Subject Verb Agreement,

Best Answer Explained in Below-:

The sentence "You must arrive early; everyone else __" is structured to point out a general requirement or expectation regarding attendance. The key part of the sentence is "everyone else", which is a singular collective noun. In English, collective nouns such as "everyone", "somebody", and "anyone" take singular verbs.

Let’s evaluate the options:

A) "does" is the correct choice because the subject "everyone" is singular. Therefore, the verb that follows should also be in the singular form: "does". So the complete sentence reads, "You must arrive early; everyone else does," indicating that everyone else has the same obligation to arrive early.

B) "are" is incorrect because it is a plural verb form that does not agree with the singular subject "everyone".

C) "don’t" is also incorrect as it is the contraction for "do not", which suggests a plural subject; again, not suitable for "everyone".

D) "do" is a plural verb form, inconsistent with the singular subject "everyone".

In conclusion, "does" is the only option that correctly maintains subject-verb agreement, making it the right choice.