Answer: I and II
When conducting research, we need to make sure that the sources we are choosing are reliable and informative. Scholarly sources are always advisable, as they have been researched and written with great care, and have passed several rounds of revision and criticism. Substative news are usually reliable as serious journalists take great care in ensuring their work is of quality. However, popular magazines often include superficial or inaccurate information, so they should not be used as a source of information for serious research.
