Final answer:
Comte believed that positive philosophy or positivism would alleviate the 'great political and moral crisis' by promoting rational governance and ethical values, which would result in a more peaceful and orderly society governed by scientific knowledge.
Step-by-step explanation:
Auguste Comte's positive philosophy, also known as positivism, posited that understanding the scientific principles governing society and the natural world would lead to progress and address the 'great political and moral crisis' of his time. From Comte's point of view, the development of the positive philosophy would help to alleviate this crisis By Promoting Rational Governance and Ethical Values (A).
He contended that societies progress through three stages, with the final stage being the positivist stage where society is governed by empirical evidence and scientific understanding. This, in his belief, would foster rational governance and instill ethical values, leading humanity into a more peaceful and orderly society.