In which general election, all the major non-communist non-Congress opposition parties formed Grand Alliance against Indira Gandhi?

1971

The correct answer is Option (3) → 1971

The Grand Alliance of all the major non-communist and non-Congress opposition parties was formed against Indira Gandhi in the 1971 general election with the sole aim of defeating Indira Gandhi. This alliance included parties like the Indian National Congress (Organisation), Bharatiya Jana Sangh, Swatantra Party, and Samyukta Socialist Party. Their slogan was "Indira Hatao" (Remove Indira). In response, Indira Gandhi famously countered with her own powerful slogan, "Garibi Hatao" (Remove Poverty), and won a landslide victory.