Explanation:

- The Manipuri Classical dancer who opened the ‘Govindji Nartanalaya’ dance school for women in Imphal is Bipin Singh.

- Bipin Singh (Option 2) was a renowned Manipuri dance guru and contributed greatly to popularizing Manipuri dance, especially among women, by establishing dance schools.

- Chandrakanta Singh (Option 1) is not known for founding Govindji Nartanalaya.

- Senarik Rajkumar (Option 3) is also not linked with this achievement.

- Nileshwar Mukherjee (Option 4) is not associated with Manipuri dance schools.

- Govindji Nartanalaya played a key role in training and empowering women in the field of Manipuri dance.