Final answer:
In the conjecture about the amount of water wasted by leaking faucets, it is assumed that the rate of water leakage remains constant.
Step-by-step explanation:
The answer to the question is a) the rate of water leakage remains constant.
When making a conjecture about the amount of water wasted by leaking faucets, it is assumed that the rate of water leakage remains constant. This means that the rate at which water is leaking from the faucet remains the same over time, resulting in a consistent amount of water being wasted.
This assumption allows for easier calculations and predictions about the total amount of water wasted over a given period of time.