Final answer:
A sociologist who subscribes to the functional theory of social stratification might argue that certain positions are more important to a society's survival than others and require special skills.
Step-by-step explanation:
A sociologist who subscribes to the functional theory of social stratification might argue that certain positions are more important to a society's survival than others and require special skills. This argument is based on the belief that social stratification exists because different aspects of society serve a needed purpose. According to functionalism, highly skilled positions that are more difficult to qualify for should be rewarded more than others, providing a financial motivation for individuals to engage in more education and pursue more difficult professions.