To re-engage users with an app, use the following strategies:

To re-engage users with an app, use the following strategies:

• A) Build remarketing lists, engage in proactive outreach, offer something unique, use deep linking, and track everything beyond installs to understand your most valuable users
• B) Build remarketing lists, engage in reactive outreach, offer something free, and don’t track anything outside of installs
• C) Build general email lists, engage in reactive outreach, don’t use deep linking, and don’t track outside of installs
• D) Build remarketing lists, engage in reactive outreach, use deep linking, and track outside of installs for your most valuable users

Correct answer is:

• A) Build remarketing lists, engage in proactive outreach, offer something unique, use deep linking, and track everything beyond installs to understand your most valuable users

Explanation: There are many things you can do today to re-engage customers: identify target customers, reach out to them via existing channels (organic and paid search), offer them something unique, measure results, and repeat. Here’s how you can bring people back to your app:
Build remarketing lists
Define in-app triggers (e.g., dropped out of purchase flow) or key segments (e.g., lapsed users) to target
Do proactive outreach
Consider available channels (e.g., e-mail, app push notifications, back of register tape) to re-engage
Offer something unique
Provide a unique experience (e.g., an in-store reward, exploding offer, or discount)
Deep-link
Develop your app so it directs people into deeper, more targeted sections
Track
Measure everything beyond installs to understand your most valuable customers and their behaviours
Read more here: https://support.google.com/partners/answer/6208430?hl=en