The correct answer is (D) To wave or flourish (a weapon, etc.) in a threatening manner; to shake or wave, as a weapon, as a preliminary to action or in display.

Abate comes from Middle English brandischen, Old French brandir

Examples of use:

• Brandishing their weapons, the insurgents screamed insults as the tank rumbled past.
• He angrily brandished his cane at the young hooligan.