We are trying to draw a logical conclusion based on the premises outlined in the stimulus.
The first step is to diagram the contrapositives of all the premises.
Not A --> B Not B --> A
A --> Not Z Z --> Not A
Not Z --> F Not F --> Z
The second step is to see if there are any chains that we can make using the transitive property. To do this, two diagrams must have the same N and S condition e.g. Not B --> A --> Not Z
There are two chains that we can make:
(1) Not B --> A --> Not Z --> F (2) Not F --> Z --> Not A --> B
Answer choice (B) can be concluded from the first chain. Using the transitive property, we can use this chain to conclude that Not B --> F.
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