What is the purpose of literature reviewing?OptionsTo identify data sources used by other researchers.NoneBothTo learn how others structured their reports

The purpose of a literature review can be multifaceted. Let's break down the options provided:

1. To identify data sources used by other researchers: This is indeed one of the purposes of a literature review. By examining the sources that other researchers have used, you can identify valuable data sources for your own research.

2. None: This option suggests that none of the provided purposes are correct, which is not accurate in this context.

3. Both: This option implies that both identifying data sources and learning how others structured their reports are purposes of a literature review. This is correct because a literature review serves multiple purposes, including these two.

4. To learn how others structured their reports: This is also a valid purpose of a literature review. By reviewing how other researchers have structured their reports, you can gain insights into effective ways to organize and present your own research.

Therefore, the correct answer is Both. A literature review helps in identifying data sources used by other researchers and learning how others structured their reports, among other purposes.