Explanation:

Initially, the task of CSP was interpreted as the displacement of the existing leadership in Congress, which was declared to be incapable of developing the struggle of the masses to a higher level.
The CSP was to develop as the nucleus of the alternative socialist leadership of the Congress
As the Meerut Thesis of the CSP put it in 1935, the task was to ‘wean the anti-imperialist elements in the Congress away from its present bourgeois leadership and to bring them under the leadership of revolutionary socialism.
This perspective was, however, soon found to be unrealistic and was abandoned in favour of a ‘composite’ leadership in wh ich socialists would be taken into the leadership at all levels.