The correct answer is A) Adilabad district.
The Adilabad district is a tribal region in Telangana that is known for its history of resistance movements. The region has a long history of tribal resistance to outside rule, dating back to the early days of the British Raj. In the early 20th century, the Adivasis of Adilabad district were involved in a number of uprisings against the British, including the Rampa Rebellion of 1922-1924. The region has also been a hotbed of Maoist activity in recent years.
The other options are incorrect. The coastal plains of Telangana are not known for their history of resistance movements. Hyderabad city is the capital of Telangana and is not a tribal region. The Deccan plateau is a large geographical region that includes parts of Telangana, Andhra Pradesh, Karnataka, Maharashtra, and Madhya Pradesh. It is not known for its history of resistance movements.