The correct answer is A) Wayanad.
Periyar National Park is a national park in the Western Ghats mountains of Kerala, India. It is one of the most popular tourist destinations in Kerala and is known for its tigers, elephants, and other wildlife. The park is also home to a variety of plant life, including many species of orchids.
The park was established in 1938 as a wildlife sanctuary and was declared a national park in 1972. It covers an area of 925 square kilometers (357 square miles) and is located in the Wayanad district of Kerala.
The park is home to a variety of wildlife, including tigers, elephants, leopards, deer, monkeys, and birds. It is also home to a variety of plant life, including many species of orchids.
The park is a popular tourist destination and offers a variety of activities, including trekking, camping, and wildlife safaris.
The other options are incorrect because they are not the location of Periyar National Park.
Option B, Idukki, is a district in Kerala. It is located in the central part of the state and is known for its tea plantations and dams.
Option C, Pathanamthitta, is a district in Kerala. It is located in the southern part of the state and is known for its temples and backwaters.
Option D, Palakkad, is a district in Kerala. It is located in the northern part of the state and is known for its rice fields and forests.