And for tips:
Remember to include at least 3 examples for each micro element (don't forget about editing, it's just as important), state the representation being created straight away, make clear links between an example and a representation and don't rely on dialogue solely when it comes to sound, you need other examples. Include relevant theory to reiterate your points.
For section b, budget and box office figures, sales etc. ARE YOUR FRIEND. Backing up your points with figures is super important and helps make your answer appear more insightful. Include as many case studies as possible but remember to embed them. Always read the specifics of the question, if it wants to know about production, don't show off all the marketing knowledge you have.