Option 1: Eight - This option suggests that there were eight Zonal Councils set up as per the States Reorganization Act, 1936. However, this is incorrect.

Option 2: Seven - This option suggests that there were seven Zonal Councils set up as per the States Reorganization Act, 1936. However, this is incorrect.

Option 3: Six - This option suggests that there were six Zonal Councils set up as per the States Reorganization Act, 1936. However, this is incorrect.

Option 4: Five - This option suggests that there were five Zonal Councils set up as per the States Reorganization Act, 1936. This is the correct answer.

The correct answer is option 4, which states that five Zonal Councils were set up under the States Reorganization Act, 1936. These Zonal Councils were created with the aim of promoting and ensuring coordination and cooperation among the states in India. They provide a platform for resolving inter-state disputes, sharing of resources, and addressing common concerns and issues in a cooperative manner. The five Zonal Councils are categorized based on geographical regions - Eastern, Western, Northern, Southern, and Central.