Sacred groves are not found in:

The correct answer is Option (3) → Eastern Ghats region of Karnataka

Sacred groves are tracts of forest set aside by tribal communities on religious grounds. All the trees and wildlife in them are worshipped and given total protection.

(1) Aravalli hills of Rajasthan — A place with sacred groves.

(2) Khasi and Jaintia hills in Meghalaya — A place with sacred groves. Here they are the last refuge of many rare and threatened plants.

(3) Eastern Ghats region of Karnataka — Not a place with sacred groves. The groves of Karnataka are in the Western Ghats, not the Eastern Ghats.

(4) Chanda and Bastar regions of Madhya Pradesh — A place with sacred groves.

NCERT Extract:
How Do We Conserve Biodiversity? – “… In many cultures, tracts of forest were set aside, and all the trees and wildlife within were venerated and given total protection. Such sacred groves are found in Khasi and Jaintia Hills in Meghalaya, Aravalli Hills of Rajasthan, Western Ghat regions of Karnataka and Maharashtra and the Sarguja, Chanda and Bastar areas of Madhya Pradesh.”