Question

the practice of science can answer only scientific questions. and scientific questions guide the design of investigations. what must be true of the possible answers to a scientific question?

a. they are at odds with established scientific theories.

b. they do not require the use of physical measurements.

c. they could be shown to be false by evidence.

d. they support an established scientific theory.

Explanation:

• Option A: Scientific answers should align with or expand on established theories, not contradict them, so A is wrong.
• Option B: Many scientific questions require physical measurements (e.g., in physics, chemistry), so B is incorrect.
• Option C: Scientific answers are testable, meaning evidence can prove them false (falsifiability), which is a key aspect of scientific inquiry.
• Option D: Scientific answers can either support or challenge theories (leading to new theories), so they don't always have to support established ones, making D wrong.

Answer:

C. They could be shown to be false by evidence.