Question

a ______ rarely changes over time and is usually described as a mathematical equation.
○ conclusion
○ hypothesis
○ scientific law
○ scientific theory

Explanation:

• A conclusion is a result of reasoning, not usually a mathematical equation and can change with new info.
• A hypothesis is a proposed explanation, tentative and not a fixed equation.
• A scientific law is a statement based on repeated experiments, often expressed mathematically and is stable over time (e.g., Newton's laws, $F = ma$).
• A scientific theory is an explanation of phenomena, more about mechanisms and can be revised with new evidence, not typically a simple equation.

Answer:

C. scientific law