Structure your essay clearly with one main body paragraph dedicated to the causes of crime and a separate, distinct body paragraph addressing prevention strategies. Explicitly state in your topic sentences which part of the question you are addressing to ensure the examiner can easily follow your argument and confirm you've covered both aspects comprehensively.

When discussing causes, consider socio-economic factors like poverty, lack of educational opportunities, and unemployment, perhaps referencing how these contribute to higher crime rates in developing nations or marginalized communities. For prevention, you could mention community policing initiatives, rehabilitation programs in Scandinavian countries, or educational reforms aimed at youth engagement as concrete examples.

A common mistake is to oversimplify the causes of crime, attributing it solely to individual moral failings or a single factor. Avoid this by presenting a nuanced perspective, acknowledging that crime is a complex societal issue influenced by a confluence of economic, social, and psychological factors, demonstrating a sophisticated understanding of the topic.

To transition smoothly from discussing causes to prevention, use a clear linking phrase at the beginning of your prevention paragraph, such as "Given these underlying causes, effective prevention strategies are paramount," or "Addressing these root issues requires multifaceted preventative measures." This clearly signals to the examiner that you are moving to the second part of the question while maintaining coherence.

Examiners look for a well-developed argument that explores both the complexity of crime's causes and the practicality of its prevention, avoiding simplistic solutions. A band 8-9 answer will demonstrate a wide range of topic-specific vocabulary (e.g., "socio-economic disparities," "rehabilitation programs," "recidivism") and sophisticated grammatical structures, all while maintaining a clear, coherent, and cohesive argument throughout.