The correct answer is (A) Cause of misery; reason for distress, harm, woe, or ruin; that which spoils or ruins. Misery, worry or anxiety. Also, someone who is a source of constant irritation.

Bane comes from Old English bana, Old High German bano.

Examples of use:

• Alcohol was the bane of her existence.
• Gambling has become the bane of countless lives in our city.