Which statement describes what scientists expect to happen every time under a particular set of conditions?

• A. Scientific Model
• B. Scientific Law
• C. Scientific Theory
• D. Scientific Method

Answer: (B)

The statement describes a scientific law. A law summarizes a pattern that scientists consistently observe to occur every time under the same set of conditions. It is usually stated as a concise rule or equation that describes what happens, but it doesn’t try to explain why it happens. That explanatory work belongs to a scientific theory. A model is simply a representation used to understand or predict phenomena, and the scientific method is the process scientists use to investigate and gather evidence. So, the idea that a certain outcome is expected every time under fixed conditions matches the idea of a scientific law.