Hi, we are being asked what we know for sure that A and M disagree about. A thinks that moderation is always taking the middle ground, and that this leads to loss of joy from bring unable to occasionally take risks.
M thinks that moderation is actually different from what A thinks- that A's overcommitment to moderation is actually immoderate, or extreme, and tho moderation must involve some calculated risk taking.
So, we know they have different conceptions of moderation, so B is correct
