Question

select the correct answer.
under what circumstances will a scientific theory be changed or discarded?

a. new experimental evidence is not compatible with the theory

b. many experiments give the results predicted by the theory.

c. a scientist makes a hypothesis that contradicts the theory.

d. a scientist proposes a competing theory.

Explanation:

• Option A: Scientific theories are based on evidence. If new experimental evidence doesn't match the theory, the theory may need to be changed or discarded to align with the evidence.
• Option B: If many experiments confirm the theory's predictions, the theory is supported, not changed/discarded.
• Option C: A single scientist's hypothesis contradicting the theory isn't enough; hypotheses need to be tested and supported by evidence to challenge a theory.
• Option D: A competing theory alone isn't sufficient to change/discard an existing theory; the competing theory must be supported by evidence.

Answer:

A. New experimental evidence is not compatible with the theory