Everyone has the right to choose what to eat for lunch It has a

A. singular subject and a singular verb
B. plural subject and a plural verb
C. singular subject and plural subject
D. plural subject but the verb is absent​

A. singular subject and a singular verb

Explanation:

Everyone has the right to choose what to eat for lunch.

In the given sentence, the subject "everyone" is an indefinite pronoun, singular in number. Even though it sounds like it refers to a lot of people or more than one person, it is a singular noun.

And the word "has" is the verb in the given sentence, which is singular in number. “Has” is used for a singular third person.  

So, considering the given sentence, it has a singular subject and a singular verb.

Thus, the correct answer is option A.

the dictionary definition of ubiquitous is "present, appearing, or found everywhere".

the answer should be d) he was one of those young thousands who greeted the war with a certain amount of relief, welcoming the liberation from webs of tangled emotion" since it is the best option because it shows his desire to free himself. 

hope this answer you! have a great day.