This snake is not as well known as some, but its venom is 16 times more potent than that of the cobra! There also is no really good antivenin to use, which makes it quite deadly. The Blue Krait tends to keep to itself and usually only comes out at night, though, so it is generally easy to avoid.

**The Most Poisonous Snake - Krait**

**Introduction**
Among the options given (Rat snake, Tree snake, Krait, Python), the most poisonous snake is the Krait. Kraits belong to the genus Bungarus and are commonly found in many parts of Asia, including India. They are known for their potent venom and are considered highly dangerous to humans.

**Characteristics of Kraits**
Kraits are venomous snakes characterized by their slender body, smooth scales, and a distinct color pattern. They have a triangular-shaped head, which is often wider than their neck. The scales on their body are usually shiny, and they can vary in color from black to blue or white. Kraits are nocturnal creatures and are most active during the night.

**Venom and Potency**
The venom of the Krait is highly potent and contains neurotoxins that affect the nervous system. These neurotoxins target and disrupt the communication between nerve cells, leading to paralysis and respiratory failure. The venom also contains myotoxins, which can cause muscle damage and kidney failure.

**Lethality and Symptoms**
The venom of the Krait is considered one of the most lethal among snakes. When a Krait bites, it delivers a significant amount of venom, which can quickly incapacitate its prey or pose a severe threat to humans. The symptoms of a Krait bite include severe pain at the bite site, progressive muscle weakness, paralysis, respiratory distress, and even death if left untreated.

**Antivenom and Treatment**
Prompt medical intervention is crucial in treating a Krait bite. The primary treatment for Krait envenomation is the administration of specific antivenom. Antivenom neutralizes the toxic effects of the venom and aids in the recovery process. Other supportive measures, such as respiratory support, pain management, and fluid replacement, may also be necessary.

**Conclusion**
In conclusion, the Krait (option C) is the most poisonous snake among the given options. Its venom is highly potent and can cause severe symptoms, including paralysis and respiratory failure. It is vital to seek immediate medical attention in the case of a Krait bite to ensure proper treatment and increase the chances of a successful recovery.

Krait venom contains anticoagulant enzymes wich causes severe bleeding disorder.