The British introduced forced labor in Manipur known as:

Pothang
Lallup
Nongpok Sekmai
Meira Paibi

The correct answer is (b), Lallup.

Lallup was a system of forced labor imposed by the British on the people of Manipur in the 19th century. It was a form of corvee labor, in which people were required to work for the government without pay. The labor could be used for any purpose, such as building roads or bridges, or carrying supplies for the army.

Lallup was a very unpopular system, and it led to a great deal of resentment among the people of Manipur. It was eventually abolished in 1920, but its legacy continues to be felt in Manipur today.

The other options are incorrect.

(a) Pothang is a traditional Manipuri dance.
(c) Nongpok Sekmai is a village in Manipur.
(d) Meira Paibi is a women’s organization in Manipur.