The correct answer is (D) To separate, disunite, sever the association. To keep apart in one's mind. In psychiatry, to subject to dissociation. In chemistry, to separate a compound into simpler constituents, which can be recombined under other conditions. To disconnect.

Examples of use:

• She quickly disassociated herself from the company after she learned of their involvement in price-fixing.
• He chose to disassociate himself from that organization in view of the circumstances.