Choose the correct sentence regarding the use of 'either...or'.
A
Either John or Mary are responsible.
B
Either John or Mary is responsible.
C
Either John or Mary be responsible.
D
Either John or Mary were responsible.
Correct Answer: Option B — Either John or Mary is responsible.
Explanation:
With 'either...or' constructions, the verb agrees with the noun closer to it. Since 'Mary' is singular, the correct verb form is 'is', making option B correct.