Please tell this easy question having a big doubt #English Aptitude

Question

Tell the correct word with Correct Reason.

This is the man $\textbf{who/whom}$ we thought guilty proved to be innocent.

Answer 1

• Who should be used to refer to the subject of a sentence.
• Whom should be used to refer to the object of a verb or preposition.

 Here subject of guilty is the man that's why we have to use "who" .

This is the man who we thought guilty proved to be innocent. is correct