A scientist is studying snakes in the tropical rainforest. She surveys a 1 square mile area. She collects the following data: Based on the evidence provided, what is the most likely explanation for the red snake population size? (SC.5.N.1.1)

The red snakes are not well hidden, so they are eaten by predators often.

The green snakes and the red snakes are in competition for the same food.

The black snakes prey upon the red snakes during certain times of the year.

The red snakes have been killed off by the poisons they produce.