The correct answer is: A) Tigers.
Periyar National Park is a major wildlife sanctuary in the Western Ghats mountains of Kerala, India. It is known for its population of tigers, as well as its elephants, deer, and other animals. The park is also home to a variety of birds, including peacocks, hornbills, and kingfishers.
Option B: Elephants are also found in Periyar National Park, but they are not as numerous as tigers. Elephants are herbivores and eat a variety of plants, including leaves, fruits, and grasses. They are also known for their long trunks, which they use to gather food and water.
Option C: Lions are not found in Periyar National Park. Lions are native to Africa, and there are no wild lions in India.
Option D: Rhinoceros are also not found in Periyar National Park. Rhinoceros are native to Africa and Asia, and there are no wild rhinoceros in India.