Which of the following mining area of iron ore is in Karnataka?

Baba Buden Hills, Kudermukh

The correct answer is Option (3) → Baba Buden Hills, Kudermukh

The major iron ore mining area in Karnataka is Baba Buden Hills (Kudremukh), located in the Chikmagaluru district. 

The other mining areas listed in the options are located in different states:

• Gurumohisani Badempahar – Odisha

• Noamundi, Gua – Jharkhand

• Bhandara, Ratnagiri – Maharashtra