In order to study moral development, kohlberg a. collected data by asking subjects of various ages to respond to stories that depicted moral dilemmas b. collected data by observing changes in moral reasoning of subjects as they aged c. used archival data from newspapers regarding moral behavior d. observed moral behavior in natural settings

The correct answer here is A.

Kohlberg wanted to study moral development of people so, in order to do so he created stories which he called "dilemmas". In this stories there were certain situations which would gauge the morality of the listeners. He read these stories to people of all ages and using the results here categorized in 3 levels with each level having 2 sub-levels.

Yes it was hope that works