Which sentence demonstrates correct subject-verb agreement?
a.
wait here until someone arrive to you.
b.
each of the students plans to graduate this spring.
c.
judging people based on appearance are very rude.
d.
nick and nora walks their terrier asta every day.

The answer is B.

Explanation:

Subject-verb agreement means that subject and verb must agree in number. So, if the subject is in singular, the verb must also be in singular; if the subject is in plural, then the verb must also be in plural.

Let`s analyze these sentences (extracting subjects and verbs)

A. someone arrive - someone is singular (3rd person), so we need -s as a suffix ⇒ arrives

B. each of the students plans - plans refers to each which is singular

C. Judging people based on appearance are - judging is gerund which functions as a noun in singular, so the verb should have been is

D. Nick and Nora walks - these two people represents one subject as they are connected with conjunction and. If the conjunction was or, then Nick/Nora would be separate subjects and we could use the verb in the singular, which is not the case in the given sentence.

the correct answer is the first one.

to eliminate ambiguous remote or broad reference it is necessary to focus on anaphoric reference. by definition "anaphoric reference means that a word in a text refers back to other ideas in the text for its meaning." the references should be clear and leave no room for ambiguity.

in the first case the pronoun it probably refers to the car but it has not been mentioned before so we should replace it for the car. in doing so the statement becomes clear.

in sentence number   two   the pronoun he refers to charles dickens the author. yet, the first half of the sentence is about the book a tale of two cities. to repair this it would be better to rephrase the first half : after i read   a tale of two cities by dickens, he so as to remove the remote reference.