Answer Choice C
Started by
ivyandroses27
· started 2019-08-27 02:06
· last activity 2019-08-27 22:25
· 1 reply
I understand why choice A is correct. However I do not understand how C is invalid? Roses are growing in the garden and they have no smell so they must be worth growing in the garden.
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Irina
· 2019-08-27 22:25
@ivyandroses27,
That's a fitting username! Let's look at the argument:
Roses always provide a stunning display of color:
R -> DC
but only those flowers that smell sweet are worth growing
~SS -> ~WG
WG -> SS
Some roses have no scent:
R some -> ~SS
We can conclude that:
R some -> DC & ~SS & ~WG
that is expressed in the answer choice (A).
We cannot infer (C):
WG some -> ~SS
because it would contradict our premise (2):
WG -> SS
Let me know if you have any further questions.
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