Answer:
I think A, B, C (first 3). The last 2 dont seem particularly helpful to the diversity problem in my opinion
True. It is often the case that additional information can be implied, calculated, or directly brought forward from earlier questions. This is not necessarily the case, however, as you may not be able to complete a question right away due to a lack of knowledge or understanding; but the use of 'may' in the question makes this a true statement.
For research-be it self research or school research (project)