If the italicized part of the sentence is the word <em>courses, </em>then the correct answer is predicate noun/nominative.
A predicate nominative is the first noun found after a linking verb, such as to be, or in this sentence, the verb <em>are. </em>You can see that the first noun following the verb <em>are </em>is the word <em>courses, </em>which means it is a predicate nominative.
<span>He believed that they had a moral responsibility to use that wealth to lift up the conditions of everyone else in society. He felt that it was the duty of those of great means to be philanthropic to the point at which they did not have anything of their own at the end of their lifetimes.</span>
