Jayaprakash Narayan (JP) and N.G. Ranga were prominent leaders associated with socialist tendencies within the Indian National Congress.

Jayaprakash Narayan, also known as JP, was a key figure in the socialist movement and played a significant role in advocating for social justice and economic equality. He was an influential leader in the Congress Socialist Party and later became a leading figure in the broader socialist movement in India.

N.G. Ranga, also known as N.G. Ranga, was a prominent agricultural leader and a socialist politician. He was associated with the Congress Socialist Party and later played a crucial role in the formation of the Bharatiya Lok Dal, a political party with socialist ideals.

So, the correct option is [1].