These sentences are mixed up parts of one paragraph. Please number them in order(Remember to write the number in each blank. For example, you should write 1 instead of "Topic sentence"):
1. Topic sentence2. Supporting sentence3. Concluding sentence
What should I study at university?
(1)  It wasn’t an easy decision, but for the reasons listed above, I have decided to study journalism.
 (2) It can be difficult to choose a subject to study at university because there are so many choices, but by considering my skills and interests, I have decided to study journalism.
(3)  I have always enjoyed writing, so it is sensible to choose a subject that involves writing. When I begin working, I would like to have the opportunity to travel, and travel is often an important part of a journalist’s job. Finally, I am also interested in photography, and pictures are very important in journalism.