Alexis wants to research the 1960? s feminist movement. she reads articles from the time period, watches documentaries, reads scholarly journals on the topic, and interviews influential women from the movement. what kind of research method is alexis using?

Secondary data analysis

Explanation: Secondary data analysis is the analyzation technique in which the primary source of information and facts is gathered by some other person for other purpose than the researcher's purpose. That data is used by the researchers who practically has limited resources access for information and time.

The example mentioned in the question describes about the secondary data analysis because Alexis is using the information and sources (e.g -documentaries, articles etc )created by some other person for research.  

explanation:

may i ask what challenges?