The best way to do this is to approach it with originality. Express your own opinions of the Artist and their work. If you have had the opportunity to see the artists work in an exhibtion, include this within your research: you can talk about what you did and didnt like about the work and if the presentation of it in context with the space and other pieces has any effect on it. Examiners don't like to see a printed block of text which could be found online, they like to see what you have personally taken from researching the artist and their work and what you plan on doing with it (has it influenced your practice?). Including a transcription you have made from looking at the artists work will allow you to achieve the highest marks! (or sketches you potentially made at the exhibition)