Please choose the correct ending to complete the given sentence: Education and Communications: [header] How to research a topic [title] Identify your research topic. [step] Sometimes you get to pick a topic and sometimes your teacher or professor assigns you a topic. Even so, you usually still get to pick your angle of focus.

Ending1: This is completely normal, but it's important for you to do your research regularly and make sure you're in a suitable environment. [substeps] Your teacher won't give you a lecture, but maybe your professor will. Ending2: Focus on those points when talking or commenting on your notes and research papers. This can be an excellent way to get your research done as soon as the lecture is over. Ending3: Therefore, be sure that you have purpose if you want to study in a particular field. [substeps] If you're new to your field, do some preliminary research so that you have ideas to keep on your science paper. Ending4: Pick an idea you find interesting and go from there. [substeps] In the beginning stages you don't need to have your topic super focused.

Answer format: ending1/ending2/ending3/ending4