Answer:
First stage.
Step-by-step explanation:
In order to explain how people reason Kohlberg’ made or proposed many moral dilemmas and one of them is the "Heinz dilemma". With this moral dilemma that is the "Heinz dilemma" Kohlberg’ was able to divide moral development into different levels and the levels are;
(1). Preconventional level, (2). Conventional, and (3). Postconventional.
Each levels is further divided into stages. Since our question is more about the first level so i will be discussing only the first level.
The first level which is Preconventional level is all about what comes after one has done something and this help shape the individual to make his or her choices. For instance what punishment comes after you have done something bad.
So, Joaquin in the question above thought about what his mom said about punishment after stealing and that made stealing to not be an option for Joaquin.