It can often be difficult when answering an essay question to clearly phrase your answer without losing sight of your main point and waffling. An incredibly helpful way of improving your writing style is to follow the PEAL chain rule within each paragraph. PEAL stands for: 

P - Point. Begin the paragraph with the overall point you want to make.

E - Evidence. Find evidence of your point such as a quote from within the text.

A - Analyse. Analyse your example from the text and how this reinforces your initial point.

L - Link. Remember to check that your paragraph is answering the question and ends in a way that you can link it to the opening of your following paragraph.

In following these steps, you should be able to decrease repetition and overwording your paragraphs, allowing you to write clearly and concisely.