What is the difference between "who" and "whom"?

[Monika Selesh]

ESL/EFL Test "Relative Pronoun Exercises", question 4

......... do you think would have a car like that?

(a) Whom
(b) That
(c) Who

ESL/EFL Test "Relative Pronoun Exercises", answer 4

Who do you think would have a car like that?

Correct answer: (c) Who

Your answer was: incorrect
Whom do you think would have a car like that?
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Why we used who and not whom here

[Alan]

Who is the subject of the sentence.
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English as a Second Language
You can read my ESL story A day in the life of a parliamentary candidate

[Mfiliov]

What's the difference between Who and Whom?

[Torsten]

Who is or asks for the subject of a sentence while whom is or asks for an object:

Who gave you the money?
Whom gave you the money to?

In the first sentence somebody gave you some money.
In the second sentence you gave the money to somebody.
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Test Of English for International Communication
TOEIC Preparation & TOEIC Vocabulary

[Xiao_Lai]

I'd suggest both answers are correct, however, "who" is used more in general verbal practice.
Notify me with explanation if I am wrong, thanks in advance!

[Torsten]

Yes, I agree with you Xiao Lai but in the given sentence only 'who' is correct.
_________________
Test Of English for International Communication
TOEIC Preparation & TOEIC Vocabulary

[Xiao_Lai]

Dear Torsten,
Thanks for your quick response! Although you didn't give the explanation, you made me believe someone is always there. It's quite early in your residence, isn't it.
Anyway, I'll do more work in digging it out.
Thanks again!