If a person has lockjaw, what disease is he or she suffering from?

The correct option is B - Tetanus

Tetanus is a bacterial infection also known as lockjaw. Tetanus is caused by the bacterium Clostridium tetani (C tetani). It is a fatal disease of the nervous system caused by nerve toxins released by the bacterium.

Symptoms of tetanus include:

• Tetanus often begins with mild spasms in the jaw muscles known as lockjaw. The spasms can also affect the facial muscles and experience spasms and stiffness in various muscles, especially those in the jaw, abdomen, chest, back, and neck.
• Muscle cramps or spasms in your legs.
• Difficulty swallowing.
• Fever, high blood pressure, nervous system dysfunction, or sweating.