Answer : 4. "Arunachal Pradesh"
Explanation :

Arunachal Pradesh Chief Minister Pema Khandu has announced the launch of the Chief Minister Shramik Kalyan Yojana (MMSKY) as part of the National Labor Day celebrations. Under the scheme, there has been a significant increase in benefits like maternity benefit, natural death compensation, accidental death compensation, funeral assistance, medical aid and many more.