Question

with whom did the umbrella man have his second transaction?
What are we told about this person?​

Answer 1

Answer:Whom should be used to refer to the object of a verb or preposition. When in doubt, try this simple trick: If you can replace the word with “he”' or“'she,” use who. If you can replace it with “him” or “her,” use whom. Who should be used to refer to the subject of a sentence.

“This is the man ___ I told you about.”

You are telling (verb) about the man (object) so whom is acceptable.

OR

This is the man SHE told you about. So who is acceptable.

Truth is, the right or wrong answer is whatever the person asking the question decides. That is such a tricky and commonly used sentence to try and define the difference between which is correct, that 3/4 possible options are going to be wrong and the one that is correct can only be determined with certainty by the questioner. Oxford comma vs no Oxford comma is another example.

Explanation: