The national reptile of India is the King Cobra, which is represented by option 'B'. The King Cobra holds great significance in Indian culture and is considered a majestic and iconic species. Let's delve into the reasons why the King Cobra was chosen as the national reptile of India.

Importance of the King Cobra:
The King Cobra (Ophiophagus hannah) is the world's longest venomous snake, with an average length of 3-4 meters. It is native to the forests of the Indian subcontinent, including India, and is widely distributed in the country. Here are some key reasons why the King Cobra was chosen as the national reptile of India:

Cultural and Mythological Significance:
The King Cobra holds significant importance in Indian culture and mythology. It is often associated with Lord Shiva, one of the principal deities in Hinduism. In Hindu mythology, Lord Shiva is depicted wearing a snake around his neck, symbolizing power and protection. The King Cobra is also believed to be a guardian of hidden treasures, further adding to its cultural significance.

Ecological Importance:
The King Cobra plays a crucial role in maintaining the ecological balance in the forest ecosystems of India. It is a top predator and feeds primarily on other snakes, including venomous species. By controlling the population of snakes, the King Cobra helps in preventing their overabundance and maintaining a balance in the food chain. Its presence also indicates a healthy and diverse ecosystem.

Conservation Concerns:
The designation of the King Cobra as the national reptile of India also aims to raise awareness about its conservation status. Due to habitat loss, deforestation, and illegal wildlife trade, the King Cobra population has been declining in recent years. By highlighting its significance, the hope is to promote conservation efforts and protect this majestic species from further decline.

Conclusion:
In conclusion, the King Cobra was chosen as the national reptile of India due to its cultural and mythological significance, ecological importance, and conservation concerns. This designation serves as a reminder to protect and conserve this iconic species for future generations.