The word 'how' in the question is asking you about how language works.
It's also not enough to simply name the technique: metaphor, simile, personification etc Yes, you need to be able to identify those things because you are asked to include imagery in your answer to Paper 2 Question 2. Knowing what constitutes imagery is therefore vital.
However, the key to a good response is knowing how the image works and why the author chose it over another word or phrase.
Steps to a good answer:
- Read the question carefully and make sure you follow instructions as to where the phrases must be selected from.
- Make relevant selections of short phrases, some with striking imagery.
- Try to explain why a particular word or phrase is being used in that context.
Don't waffle about how some phrase helps us to imagine something more clearly. Be clear and precise with your own language to explain exactly how the writer's choice of words work and the effect they have on the reader.