Which of the Following Represents a Well-Written Basic Research Problem

Multiple Choice

Which of the following represents a well-written basic research problem?

A) "Which general education course is more interesting,U.S.History or World Music? "
B) "How do business teams of six or fewer members compare to teams of more than six members in terms of productivity?"
C) "How does the organization of mathematical information in long-term memory differ between 3-year-olds and 13-year-olds?"
D) "What is the ratio of native-born students to international students on the campuses of major U.S.state universities?"