Answer:
The answer is - B. Nonmoral properties that share the alleged "queerness" of moral ones
Explanation:
Companions in guilt arguments (CGAs) by Lillehammer H. is an argument for for ethical objectivity. J.L Mackie's book is on Ethics: Inventing Right and Wrong, in which she develops a term "The argument from queerness" which studies ethics. When Mackie is discussing Companions in guilt he is referring to nonmoral properties that share the alleged "queerness" of moral ones