Step 1: Understanding the Concept:
The question asks for the full form of the DPT vaccine acronym. DPT is a combination vaccine that protects against three serious infectious diseases.
Step 2: Detailed Explanation:
The acronym DPT stands for:
D - Diphtheria: A serious bacterial infection affecting the nose and throat.
P - Pertussis: Commonly known as whooping cough, a highly contagious respiratory infection.
T - Tetanus: Also known as lockjaw, a bacterial infection that causes painful muscle spasms.
Option (B), Bacille Calmette-Guerin, is the full form of the BCG vaccine, which protects against tuberculosis.
Step 3: Final Answer:
The full form of DPT is Diphtheria, Pertussis, Tetanus.