Passage Summary: Every moral act is a kept promise, and every kept promise is a win-win; however, since some kept promises aren't moral, some win-wins aren't moral either.

Conclusion: Some actions that secure mutual benefit are not actually moral actions.

Reasoning: All moral actions are agreement-keeping, and all agreement-keeping is securing mutual benefit, yet some instances of agreement-keeping are not moral.

Analysis: The structure here is a valid syllogism: All A are B, and all B are C. If we know that some B are not A, it logically follows that some C (the ones that are the non-A version of B) are not A. When looking for a parallel, focus on this nested 'All' relationship followed by a 'Some Not' distinction. The correct answer must maintain this exact logical flow without switching the direction of the categories.