Answer: d) pitcher plant
Explanation: Pitcher plants are a type of carnivorous plant found in the rainforest. They have evolved unique adaptations to capture and digest insects. The leaves of pitcher plants are shaped like a pitcher or a tube with a lid, which contains a liquid that attracts insects. When insects land on the slippery rim of the pitcher, they fall into the liquid and are unable to escape. The liquid contains enzymes that break down the insects and provide nutrients to the plant. This adaptation allows the pitcher plant to obtain nutrients that are scarce in the rainforest environment.