Determine which of the lettered claims below is equivalent to the following: Although Steve can give blood, he has not been tested. (This is easy to do if you symbolize the claims first and have some familiarity either with truth tables or with the Group II rules for derivations-the truth-functional equivalences.)
A)If Steve can give blood, then he has been tested.
B)If Steve has been tested, then he can give blood.
C)Steve cannot give blood, and he has not been tested.
D)Steve has not been tested, but he can give blood.

Question

Quizplus · Accepted Answer

The original statement says Steve can give blood but hasn't been tested, which directly matches choice D, stating he hasn't been tested but can give blood. This is the only choice that maintains the original statement's structure and content.

Determine Which of the Lettered Claims Below Is Equivalent to the Following