Araku Valley, a scenic hill station, is located in which district?

The correct answer is: a) Visakhapatnam.

Araku Valley is a scenic hill station located in the Eastern Ghats of Andhra Pradesh, India. It is situated in the Visakhapatnam district, about 120 kilometers from Visakhapatnam city. The valley is surrounded by hills and forests, and is home to a variety of plant and animal life. Araku Valley is a popular tourist destination, and is known for its beautiful scenery, waterfalls, and tribal culture.

The other options are incorrect because:

• Chittoor is a district in the Rayalaseema region of Andhra Pradesh. It is located about 300 kilometers from Visakhapatnam city.
• East Godavari is a district in the coastal region of Andhra Pradesh. It is located about 200 kilometers from Visakhapatnam city.
• Srikakulam is a district in the northern coastal region of Andhra Pradesh. It is located about 300 kilometers from Visakhapatnam city.