Which national park in Arunachal Pradesh is famous for its rhododendron forests?

The correct answer is: a) Namdapha National Park.

Namdapha National Park is a national park in Arunachal Pradesh, India. It is the largest national park in India, covering an area of 1,784 square kilometers (692 sq mi). The park is known for its biodiversity, including its population of tigers, elephants, and other endangered species. It is also home to a variety of plant life, including rhododendron forests.

The other options are incorrect because:

• Mouling National Park is a national park in Arunachal Pradesh, India. It is known for its population of snow leopards and other endangered species.
• Kaziranga National Park is a national park in Assam, India. It is known for its population of rhinoceroses and other endangered species.
• Manas National Park is a national park in Assam, India. It is known for its population of tigers and other endangered species.