Question

Scientific research starts with a research question. The question MUST be testable. You must be able to collect data to help answer the question. Which question could be used to start a scientific investigation?
Responses
A Are horses better than mules?Are horses better than mules?
B Do horses run faster than mules?Do horses run faster than mules?
C Are horses happier than mules?Are horses happier than mules?
D The mules do not eat the same food as the horses.The mules do not eat the same food as the horses.

Answer 1

B — "Do horses run faster than mules?"

Reason: it's a clear, testable question you can measure (record running speeds). A ("better") and C ("happier") are vague and not directly measurable without specific definitions/metrics, and D is a statement, not a question.