Which of the following statements is most correct?

a. Everyone is nervous on their first day.

b. Everyone company has the same culture.

c. Everyone drives to work.

d. Everyone is a good listener.

The sentence that is most correct is, Everyone is nervous on their first day. The correct answer is option A. Based on facts and experiences, all or most of us are nervous during our first day on something. The sentence is also properly and correctly written based on grammar and tenses.