Which of the following is an example of an insectivorous plant that uses a pitfall trap to catch insects?

The correct answer is the Pitcher plant.

Pitcher plants are a type of insectivorous plant that use a pitfall trap to catch insects. The trap consists of a deep, tubular leaf that is filled with digestive fluid. Insects are lured into the trap by nectar or the colorful appearance of the plant. Once inside, the slippery walls of the pitcher prevent the insect from escaping, and it eventually drowns in the fluid and is digested by the plant.

The Venus flytrap and sundew use different mechanisms to catch insects. The Waterwheel plant uses small traps on its leaves to catch aquatic invertebrates and does not use a pitfall trap.