Botulism is spread through:

The correct option is A

Contaminated food

Botulism is a serious illness caused by the bacterium Clostridium botulinum. It spreads through contaminated food. The bacteruium releases a toxin which causes paralysis. The paralysis usually begins in the face and eventually spreads to the limbs. If it reaches the muscles responsible for breathing, it can cause a respiratory failure, ultimately resulting in loss of life.