The correct answer is A. The Hill Highway (NH 544) is an important route connecting Kerala with Tamil Nadu. It is a 650-kilometer-long highway that runs from Thiruvananthapuram in Kerala to Coimbatore in Tamil Nadu. The highway passes through the Western Ghats and offers stunning views of the mountains and valleys. It is a popular tourist destination and is also used by commuters and freight vehicles.
The other options are incorrect. The Hill Highway does not connect Kerala with Karnataka or Andhra Pradesh.
Option B: The Hill Highway does not connect Kerala with Karnataka. The highway that connects Kerala with Karnataka is the NH 766.
Option C: The Hill Highway does not connect Kerala with Andhra Pradesh. The highway that connects Kerala with Andhra Pradesh is the NH 49.