True
A moral argument is an argument that contains a prescriptive premise. In other words, it contains a premise that makes a moral claim. But while a moral argument must contain a prescriptive premise, it may also contain one or more descriptive premises. The following is an example of a moral argument containing both descriptive and prescriptive premises: "You shouldn't kick dogs for the fun of it. Fido is a dog. Therefore, you shouldn't kick Fido for the fun of it."