The correct answer is A. Leh.
Leh is the largest district in Ladakh region in terms of area. It is located in the northern part of the Indian state of Jammu and Kashmir. The district has a population of about 300,000 people and a land area of about 98,111 square kilometers. Leh is the administrative headquarters of the Ladakh region.
The other options are incorrect because they are not districts in the Ladakh region. Pulwama, Shopian, and Budgam are districts in the Indian state of Jammu and Kashmir.
Pulwama is a district in the Indian state of Jammu and Kashmir. It is located in the south-central part of the state. The district has a population of about 1.2 million people and a land area of about 1,350 square kilometers. Pulwama is the administrative headquarters of the district.
Shopian is a district in the Indian state of Jammu and Kashmir. It is located in the south-western part of the state. The district has a population of about 400,000 people and a land area of about 780 square kilometers. Shopian is the administrative headquarters of the district.
Budgam is a district in the Indian state of Jammu and Kashmir. It is located in the central part of the state. The district has a population of about 1.1 million people and a land area of about 1,100 square kilometers. Budgam is the administrative headquarters of the district.