The Phawngpui National Park, home to the highest peak in Mizoram, is located in:

The correct answer is: a) Lawngtlai District.

Phawngpui National Park is located in the Lawngtlai District of Mizoram, India. It is home to the highest peak in Mizoram, Mount Phawngpui, which is also known as Blue Mountain. The park is a popular tourist destination for its scenic beauty and its abundance of wildlife.

The other options are incorrect because:

• Saiha District is located in the southern part of Mizoram, while Phawngpui National Park is located in the northern part of the state.
• Lunglei District is located in the central part of Mizoram, while Phawngpui National Park is located in the northern part of the state.
• Mamit District is located in the eastern part of Mizoram, while Phawngpui National Park is located in the northern part of the state.