Answer:
A - George's confession to Slim why he and Lennie had to leave Weed illustrate the author's characterization of the confidential conversation of George with Slim.
Step-by-step explanation:
It is because the above conversation shows itself the features of a confidential conversation, that is a conversation wherein communication is done from one person to another and intended to be heard only by the person addressed. George's confessed to Slim that he himself along with Lennie had to leave Weed. It is a communication/conversation which can be undertaken as a form of privileged communication that itself is known as confidential communication. Such conversations require expression between two individuals, which are to be communicated to each other only or only to the individual intended.