Answer:
they could be safer to use
Explanation:
Answer: Effective but not efficient
Explanation:
Something is effective if it can help achieve a specific goal, delivering the expected outcome, while something is efficient when it provides the best possible outcome with the least waste of resources.
Something can be effective but not efficient.
Mary´s work is effective because it delivers the best cakes, but inefficient since three cakes get wasted.
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.
