At the end of the nineteenth century, the popularity of the classical approach began to decline as criminologists focused their attention on internal and external factors, such as poverty, iq, and education, rather than personal choice and decision making.

1. positivist
2. ecological
3. classical
4. interactionist

The correct answer is :   1.  Positivist

Explanation:

Positivist criminology is the study of criminal behavior based on external factors.  In other words, this theory says that a person is born as a criminal and that the society doesn't make them become criminals. Moreover, This theory does not take into account the role of free will in their actions.

well 1 they have there leader that controls them