Because as pitcher plants have an open lids which they trap insects and feed on them and that why they are known sa pitcher plants

The plants which traps and feeds on insects is:
There are several plants that have evolved to trap and feed on insects as a source of nutrients. One such example is the pitcher plant. Here is a detailed explanation:
Pitcher Plant:
- Pitcher plants are carnivorous plants that have specialized leaves shaped like a pitcher or a cup.
- The leaves of the pitcher plant are modified to form a deep cavity with a slippery wax-like coating on the inner surface.
- The pitcher plant lures insects into the cavity through nectar secretions or attractive colors on the rim of the pitcher.
- Once inside, the insects become trapped due to the slippery walls and downward-pointing hairs that prevent them from climbing out.
- The pitcher plant secretes digestive enzymes into the cavity, which help break down the insect's body.
- The nutrients released from the decomposed insects are then absorbed by the plant to supplement its nutrition, especially in nitrogen-deficient environments.
- Some species of pitcher plants can even digest small vertebrates like frogs or lizards.
Other plants that also trap and feed on insects include:
Cuscuta:
- Cuscuta, also known as the dodder plant, is a parasitic plant that does not have chlorophyll.
- It attaches itself to a host plant and derives nutrients by piercing the host's stem and absorbing its sap.
- While it doesn't directly trap insects, it depends on other plants for its nutrition.
China Rose:
- The China rose is not a carnivorous plant and does not trap insects for feeding.
Rose:
- The rose is also not a carnivorous plant and does not trap insects for feeding.
In conclusion, the correct answer is C: Pitcher plant. It is a fascinating example of a plant that has evolved to trap and feed on insects as a means of supplementing its nutrition.