44 LR One Question 14
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From the 4th sentence (had either one or the other phenomenon ... ), I made the equation R or C -> E.
However, it looks like your equation (~R + ~C -> ~E) was made from the last sentence.
What’s the problem of my equation? Further, I’m not sure which is a conclusion.

The problem is that "being consistent with" does not mean "requiring." See this video for more on consistency and inconsistency, and let me know if you still have questions!
The conclusion is the first sentence. Note that the rest of the argument gives the reasons we should believe that sentence.

Although “consistent with” is included in the conditional statement, does it never play a role?
For example, there is a sentence that if A, then it is consistent with B.
Can’t I express it as A -> B ?

It's hard for me to imagine the word "consistent" being used in conjunction with any conditional relationship, but it's a big world. Lots of things are possible. Still, the formulation you've suggested sounds to me like it's not indicating any conditional relationship.