What are the four types of poisonous snakes found within CONUS?

The identification of the four types of poisonous snakes found within the continental United States (CONUS) should focus on species that are known to possess venom harmful to humans. The correct answer includes Rattlesnakes, Copperheads, Water moccasins, and Coral snakes, all of which are recognized for their venomous bites.

Rattlesnakes are widespread across North America and are easily identified by the distinctive rattle on their tails, which serves as a warning signal. Copperheads are found in the eastern and central United States and can be recognized by their coppery coloration and hourglass markings on their bodies. Water moccasins, also known as cottonmouths, are semi-aquatic snakes found in the southeastern U.S. and are often seen near water bodies. Coral snakes, although less common, have potent venom and are recognizable by their bright coloration of red, yellow, and black bands.

The other answer choices contain snakes that do not fall into the category of venomous species. For example, King snakes and Gopher snakes are non-venomous and are often mistaken for their venomous counterparts but do not pose a threat in terms of venom. Additionally, the reference to Pythons and Gartersnakes in