What was not an "idea" behind new pop in relation to british postpunk?

The correct answer is Adding dissonant and edgy, slashing guitar work

Before the new developments in pop, British music was always edgy and dark when it came to rock and punk tendencies. Music was mostly about things like politics or drugs or over-indulgence in vices and sexual activities and similar things and new developments in pop wanted to bring a different thing to the scene. This peaked in the 90s with the Brit pop movement.