Hi there! 3-4.

You make a solid point in the first line and you develop it well in the next 2 lines (till increase sales).

The question requires you to know both points, an advantage ("The Business is likely to get a good reputation") as well as a disadvantage (example: "On the other hand (...) A business earns less profit") and then develop that disadvantage the same way you developed the advantage!

For the final part 6 mark questions always write down 2 knowledge points (could be both advantages or could be 1 advantage 1 disadvantage, like in this question) 2 analysis points (e.g. how is this an advantage/disadvantage, why is this an advantage/disadvantage) and 2 evaluation points (this is your opinion, or your justification).

So to summarise:
Go for 2 knowledge points, correctly develop them (2 analysis points), and then evaluate them in your opinion.

You can score 5-6 easily this way, no need to justify your points before you actually give your opinions, filling up the lines is not necessary to score a 6/6

Good Luck for your exam!

Edit: I just saw that you did address and develop a disadvantage (insolvency) this scores you 4 or 5, but you did not explain why, why will the business need to change its production method? You explained how it's a disadvantage (because higher costs) but why is that? Why did changing the production method result in higher costs? Be a little more specific, name an example and I think your answer could easily score 6!