Answer: Option (B)
Explanation: Herbivores refers to those organism that are dependent only on the plants and trees i.e. they can consume only plants. They are in the second position in the trophic level. They have the unique digestive system that allows them to consume all types of green leaves and plants and they obtain energy from this. For example, cows, goats, buffaloes and horses.
Thus, the correct answer is option (B).