Answer: its function in the sentence.
Explanation:
There´s a grammatical rule to determine the function of a pronoun in a sentence when used as part of a compound. Which pronoun to use will be established by its function in the sentence.
For example, in the Subject position, "he," "she," or "I" should be used. However, as the Object of a verb or preposition, "I" is replaced by "me," "he" is replaced by "him," and "she" is replaced by "her."
Hey I have read this a while ago so unfortunately I cannot give you detailed textual evidences. However I can give you some original written ideas.
Basically Brutus uses pure logic in his speech in order to modify his act of murdering his friend. He does take blame and also proves his nobility by saying (or repeating) that he loved Caesar. His speech concludes to Brutus not having sufficient impact on his listeners (at least less than that of Antony). Brutus can indeed be classified as a noble man, as he leaves the place and allows Antony to have his regards paid towards Julius Caesar.
Antony however makes use of numerous emotional gestures, along with expressions in order to awaken the attention of wrong done towards Caesar. He initiates his speech with saying that he can barely talk due to his grief. He further supports his arguments by saying that Caesar was innocent and a noble and well mannered man as well.
D. I might wear this black dress or I might wear the red dress.
