We need to conform to the principle that when lying brings about more good than harm, lying is morally permissible.
Correct Answer
Answer choice (D) provides some good and no harm. Therefore it was morally permissible for Debra to lie to Thomas.
Incorrect Answers
(A) fails to indicate whether Marcus’ lie would involve more good than harm.
(B) fails to indicate whether Lane’s lie would involve more good than harm.
(C) does not indicate whether that lie would involve harm to oneself and whether that harm would outweigh any potential good.
(E) fails to indicate whether the harm to others would be less than the benefit to oneself.