RQ3 Which themes in posts from Merchants who sell JUUL e-cigarettes drive more engagement?
RQ4 What are the reactions to the content in posts from Merchants who sell JUUL e-cigarettes?
you are writing a literature review for these two RQ. please use 5 peer-reviewed articles for each research question.

For RQ4, I already found two articles.
Gao Y., Xie Z., Sun L., Xu C., & Li D (2020). Electronic cigarette-related contents on Instagram: Observational study and exploratory analysis. JMIR Public Health and Surveillance, 6(4), E21963. http://doi.org/10.2196/21963

Li, C., & Stacks, D. W. (2015). Measuring the impact of social media on business profit & success: A fortune 500 perspective. New York: Peter Lang Publishing, Inc. please find 3 more articles other than these two articles.
For RQ4, I suggest you cover 1. Why it is important to understand the publics’ reaction to companies social media content. 2. In general how the public reacts to a company’s posts with controversial content. What are those reactions? This part will directly impact your construction of the coding scheme too. 3. Bring it back to the focus of the content targeting teenagers.