Let's evaluate each statement: 1. North East Indian tribes reside in the states of Arunachal Pradesh, Nagaland, Manipur, Tripura, Mizoram, Meghalaya, Assam and Sikkim. These are the eight states conventionally considered part of North East India. All these states have significant tribal populations. This statement is correct. 2. North East Indian tribes can be largely associated with the ethnic groups of Indo Mongoloids, Tibeto-Burmese and proto Austrioloids. The predominant ethnic/racial stock of North East tribes is Mongoloid (often referred to as Indo- Mongoloid in the Indian context), and their languages mostly belong to the Tibeto-Burman family. Association with proto-Australoids is generally not considered a 'large' association for the NE region as a whole; this group is more associated with tribes in Central and Southern India. Therefore, this statement is likely incorrect or misleading due to the inclusion of "proto Austrioloids" as a large association. 3. Garos, Khasis and Kuki tribes are the popular group of North East Indian tribes. The Garos and Khasis are major tribes of Meghalaya. The Kuki-Chin-Mizo ethnic group is spread across Manipur, Mizoram, Assam, and Tripura. These are indeed well-known and significant tribal groups in North East India. This statement is correct. 4. The Garo people are tagged as the second largest tribal community of Manipur. The Garo tribe's primary concentration is in Meghalaya. The major tribal communities in Manipur include various Naga groups and the Kuki-Chin-Mizo groups. Garos are not a prominent or large community in Manipur. This statement is incorrect.Based on the evaluation, statements 1 and 3 are correct, while statements 2 and 4 are incorrect.