Professor Kuilema compared the moral intuitions of one group of children, a second group of adolescents, and a third group of adults by assessing their reactions to a variety of moral dilemmas. Professor Kuilema conducted a study.

Cross-sectional study

Explanation: Cross-sectional studies can be used to examine the health needs or load of disease of a particular population and are particularly useful to give useful information in making the planning and budgeting of health resources to the required population.

the right answer is: time