Hi, you do not need to follow any format of writing, this critical thinking is more like a discussion. I will provide articles and you can pick any important information as you can to prove your statement. you can argue or agree, just give enough evidence.
All applicants go through a series of tests that check their level of English and knowledge of formatting styles. The applicant is also required to present a sample of writing to the Evaluation Department. If you wish to find out more about the procedure, check out the whole process.