The correct answer is option 2: Antipyretics. Antipyretics are substances used to lower or bring down high body temperature in cases of fever. These medications work by either blocking the production of chemicals in the body that cause fever or by increasing heat loss from the body. Common antipyretics include acetaminophen (paracetamol) and non-steroidal anti-inflammatory drugs (NSAIDs) such as ibuprofen or aspirin. Tranquilizers, option 1, are medications used to reduce anxiety or induce calmness. Analgesics, option 3, are medications used to relieve pain. Antibiotics, option 4, are medications used to treat bacterial infections. It is important to consult a healthcare professional before taking any medication to ensure proper dosage and supervision.