She filled the thing with water and went to plug it in, she had finally finished her garden with what centerpiece?
Options:
- stream
- perfume
- sink
- fountain
- swamp
Please answer and provide answer explanation.

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
She filled the fountain with water and went to plug it in. She had finally finished her garden with fountain as a centerpiece. The final answer: fountain.