Consider the question. If you're in someone's house, where would you be likely to find plants?
Options:
- surface of earth
- windowsill
- park
- roof tiles
- greenhouse
 What is the step-by-step reasoning process to arrive at the answer: windowsill?

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
People tend to keep house plants on the windowsill. Windows provide plenty of sunlight for growth of plants.