Which of the Following Most Accurately Illustrates the Idea of a "Marginal

Multiple Choice

Which of the following most accurately illustrates the idea of a "marginal case"?

A) A human being with a normally functioning brain and average upbringing.
B) A nonhuman animal that lacks the rationality we take to be central to human-level moral status.
C) A nonhuman animal that possesses the rationality we take to be central to human-level moral status.
D) A nonhuman animal who, under factory-farm conditions, has marginally more pleasures than pain over a lifetime.