Answer:
The secondary sources that are appropriate to use for research are I. scholarly sources. There are a couple of reasons why II and III cannot be correct, but the most important one is that they are primary, not secondary sources. III is especially incorrect because magazines are rarely used as a source of academic research.
Step-by-step explanation:
hope this helped and gimme da CCCCCCCCCCCCCRRRRRRRRRRRRRROOOOOOOOOOOOOOOWWWWWWWWWWWWWWWWWWNNNNNNNNNNNNNNNNNNNN