The author uses the word "immediacy" (line 39) most likely in order to express

carettir on January 2, 2020

missing premise

Is it okay if you identify the contrapositive of the correct answer as the correct answer? If not, is there a rule to avoid this?

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SamA on January 2, 2020

Hello @carettir,

Remember that a contrapositive carries the exact same logic as its counterpart. Depending on the question, you might prefer to use one over the other. However, they are interchangeable. For missing premise drills, you may want to write both just to solidify your understanding of sufficient and necessary statements.