Final answer:
Mark's belief that economic disadvantage is the sole reason for street crimes aligns with social disorganization theory, which ties higher crime rates to communities with weak social ties and limited social control.
Step-by-step explanation:
Mark, a researcher of criminal behavior, believes that the sole reason people commit street crimes is because of their economically disadvantaged status. His view is an example of social disorganization theory. This theory posits that crime is most likely to occur in communities with weak social ties and the absence of social control. It emphasizes that these communities are often economically disadvantaged, with high levels of poverty, family disruption, and a lack of resources, leading to a higher incidence of deviant or criminal behaviors. Social disorganization theory is grounded in the observation that neighborhoods create conditions that may either encourage or discourage criminal activity and suggests that social factors such as poverty and family structure greatly influence crime rates.