medium · Enhanced ACT science
Hypothesis A: Monarch butterfly migration is guided by the Earth's magnetic field. Hypothesis B: The migration is guided by the angle of the sun relative to the horizon. In an experiment, butterflies were placed in a dark chamber with a simulated magnetic field rotated 90^circ clockwise. The butterflies attempted to fly in their normal migratory direction despite the change.
Which conclusion regarding the hypotheses is most valid?
- Hypothesis B is proven correct because it is the only remaining possible choice.
- Hypothesis A is undermined because the butterflies ignored the magnetic shift.
- Hypothesis A is supported because the butterflies maintained a consistent path.
- Hypothesis B is undermined because the butterflies were kept in a dark room.
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