How do I get high marks in essay questions?

In Business Studies, most of the exam papers will require multiple essay answers, so this is an indespensible skill. You must first understand the structure of an essay, which involves defining the concept, demonstrating that you understand the theory, then creating two to three paragraphs of analysis before a final (and very important) conclusion. Here you need to state a recommendation for the business, which would of been supported by what you wrote previously in your analysis.
Where students in Business Studies really lose ALOT of marks is when they fail to relate all the theory and concepts they have learned to the actual business given in the case study in the exam! This is where all the marks are gained. As a business person, you must almost imagine you are in that business. Make sure everything you write is from the perspective that you are running the business/ or a consultant within it. For example, if your working for Tesco and you want to increase profit, dont just write 'improve customer servivce', write 'improve customer service by training the staff on the tills in how to give effective communication to customers and build rapport. This could also involve helping to pack shopping bags'. See how my answer is related directly to a supermarket. In a case study you will have more info on Tesco in relation to their competitors, so you will be expected to take it one step further and state why this cause of action is better SPECIFICALLY for Tesco (rather than Aldi or Lidl).
For example, The first way Tesco could increase their profit would be to improve customer service. This could involve training employees on the tills on how to build rapport with customers. As Tesco is a premium supermarket compared to the new market entrants (Aldi & Lidl), customers will expect other forms of value rather than just price - as its likely the budget supermarkets may be undercutting Tesco on many products. Therefore, creating a family atmosphere can help Tesco retain customers. Training will have costs in the short team, but considering the real threat of Aldi/Lidl it may be justified to retain long term custom.
Ive related my answer specifically to TESCO, a supermarket with competitors Aldi and Lidl. Ive applied the theory in a specific way to the business in hand. Here in lies how you will get a top grade in Business Studies.