Final answer:
A good hypothesis is testable, provides a possible explanation to answer a scientific question, and leads to a test with measurable results. It is not based on personal opinion.
Step-by-step explanation:
A good hypothesis is one that is testable, provides a possible explanation to answer a scientific question, and leads to a test with measurable results. It is not based on one's personal opinion. A hypothesis must be based on scientific knowledge, logical, relatively simple, and falsifiable. It should be able to be subjected to a test that generates evidence for or against it.