A popular hill station known for its tea plantations and scenic beauty is:

Kodaikanal
Coonoor
Munnar
Valparai

The correct answer is: c) Munnar.

Munnar is a town in the Idukki district of Kerala, India. It is a popular hill station known for its tea plantations and scenic beauty. The town is located in the Western Ghats mountains, and is surrounded by hills and valleys. Munnar is a popular tourist destination, and is known for its beautiful scenery, tea plantations, and wildlife.

The town is located at an altitude of 1,600 meters (5,200 feet), and has a cool climate. The average temperature in Munnar is 18 degrees Celsius (64 degrees Fahrenheit). The town receives an average rainfall of 2,500 mm (100 inches) per year.

The main attractions of Munnar are its tea plantations, wildlife sanctuaries, and scenic beauty. The town is home to several tea plantations, which are a popular tourist attraction. The plantations are located in the hills around the town, and offer stunning views of the surrounding countryside.

Munnar is also home to several wildlife sanctuaries, including the Eravikulam National Park and the Periyar Tiger Reserve. These sanctuaries are home to a variety of wildlife, including tigers, elephants, leopards, and monkeys.

The town is also a popular destination for trekking, hiking, and camping. There are several trekking trails in the hills around the town, which offer stunning views of the surrounding countryside. The town is also a popular destination for bird watching, as it is home to a variety of birds.

Munnar is a beautiful town with a lot to offer visitors. It is a popular tourist destination, and is known for its beautiful scenery, tea plantations, and wildlife.