A student sent me the following question:
The role of prisons should be to punish criminals who have committed serious crimes. Training courses and education offered to prisoners are a waste of taxpayer's money. To what extent do you agree or disagree?
The student who sent me this question noticed that it contains two sub-topics:
- Should the role of prisons be to punish serious criminals, not petty criminals (less serious criminals)?
- Are training courses and education a waste of money?
Apparently there is a model essay for this question which only addresses the second sub-topic. I think that would be a mistake; you should try to answer all parts of the question.
In this case, the two sub-topics help you because they tell you what you should write about in your two main body paragraphs. Always study the question carefully, and make sure you know exactly what it is asking you to do!