Answer:
Option A = systematic review.
Step-by-step explanation:
Systematic review can simply be defined as the reviews that are done in a systematic order or way. Systematic review are through the collection of related information which are used during research in order to review questions for proper analysis which is of concern to that particular research.
Other importance or characteristics of systematic review is that the biases are limited and there is clear search strategy.
So, if we take a look at the e again, we are told that "involves a rigorously conducted process of obtaining and reviewing relevant literature to answer theoretical or practice questions'' and this is what I explained in the first paragraph above, that is the collection of information or data.