Choose the correctly formed sentence using 'whom'.
A
Whom is calling?
B
To whom did you give the letter?
C
Whom is at the door?
D
Whom called you yesterday?
Correct Answer: Option B — To whom did you give the letter?
Explanation:
'Whom' is used as the object of a preposition or verb, making 'To whom did you give the letter?' the grammatically correct usage, unlike the subject-position errors in the other options.