Your question is Singleton, Intents, and Background Limits. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
Explain singleton vs static, shared preferences, explicit vs implicit intents, and when you would use async/await style concurrency or thread.run; also cover how to transfer data between services, activities, and fragments.