I believe the correct term to fill in the blank would be rumination. Trey is engaging in a practice of rumination. It is a deep or focused thinking of one that has undergone distress. It is analogous with depression and anxiety. When one is ruminating, he keeps thinking of a certain thought repetitively without thinking of any solutions to that problem.
Answer:
There are many problems which arise when festivals are celebrated in my community.
Explanation:
1. Excess sound pollution.
2.Disagreement on each other's ideas to celebrate.
3. Serious accidents caused while preparing for the festival. And so on..
Hope this helps you!
The answer to your question is a