When diagramming a statement that uses the word 'unless,' there are two steps:
1) 'Unless' introduces a necessary condition so the part of the sentence that follows 'unless' will be the necessary condition.
In this case, the necessary condition is "terribly strong" (TS).
2) Negate the other part of the sentence and make it the sufficient condition.
The other part of the sentence reads "it would be very hard for a man to live with me" (VH2L). However, we have to negate this before including it in our diagram (not VH2L).
This is directly restated by answer choice A (not VH2L - > TS), making it the correct answer. Another way to read this sentence is "if it is not very hard for a man to live with me, he must be terribly strong."
When diagramming the contrapositive, we must reverse and negate. This would make the diagram:
Not TS - > VH2L
Overall, when diagramming a statement which uses the world 'unless,' negate the part of the sentence not introduced by 'unless' and make it the sufficient condition. When diagramming the contrapositive, always both reverse and negate.
Hope this helps! Please let us know if you have any further questions.
marthajanidsilvaSeptember 6, 2019
The instructors answer cuts off
MehranSeptember 6, 2019
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