Correct Answer: (a) Orissa, Chhattisgarh, Jharkhand, Bihar
Solution:According the Ministry of Home Affairs 90 districts in 11 states are considers as affected by Left Wing Extremism. The states where major movements are considered as Naxalite movement is Jharkhand (19), Bihar (16), Chhattisgarh (14) and Odisha (15). Other states Andhra Pradesh (6), Kerala (3), Maharashtra (3), Madhya Pradesh (2), Telangana (8), Uttar Pradesh (3) and West Bengal (1).