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Skylar June 21, 2020
@evelynakinyemi, happy to help!The sentence that gives us the diagram you are referring to is: "Specimens with fuzzy seeds always have long stems but never have white flowers." We can reword this into simpler sufficient/necessary language to get: "if you have fuzzy seeds, then you have long stems and you do not have white flowers." "If" introduces the sufficient condition, and "then" introduces the necessary, which we have two of in this case. Therefore, our diagram looks like:
FS -> LS and not WF
WF or not LS -> not FS
You ask about the following diagram instead:
not WF -> LS
not LS -> WF
Written out, this diagram would read: "if the specimen does not have white flowers, then it has long stems." Does the passage support this? No. The relevant sentence only tells us about specimens with fuzzy seeds. We have no idea what may be true about all specimens without white flowers, as we are only given information limited to those specimens with fuzzy seeds.
Does that make sense? Hope it helps! Please let us know if you have any other questions!