Pick an app - let's say you work for the company that makes this app. It's been observed that a lot of users signed up for the app and then quickly left. How would you study it to determine why they left and how to get them back? What methods or processes would you use, who would you try to talk to, and in the end what do you think your insights might be that you'd present to relevant stakeholders. Also, lets say the stakeholders find your insights interesting, but have issues with the sample size/makeup, what would you say?

Interview question asked to UX Researchers interviewing at Meta and Twitter: Pick an app - let's say you work for the company that makes this app. It's been observed that a lot of users signed up for the app and then quickly left. How would you study it to determine why they left and how to get them back? What methods or processes would you use, who would you try to talk to, and in the end what do you think your insights might be that you'd present to relevant stakeholders. Also, lets say the stakeholders find your insights interesting, but have issues with the sample size/makeup, what would you say?.