hard · GMAT Verbal
Advocates argue tidal-stream turbines offer baseload-grade predictability because tides follow exact astronomical schedules. Yet a turbine's actual output depends on water speed, which storms and seasonal river runoff can alter independently of the tide timetable. Regulators define baseload power as output guaranteed in magnitude, not merely in timing.
The statements above most strongly support which of the following inferences?
- Tidal-stream turbines cause less ecological harm than other renewable sources.
- Predictable timing of the tides is not by itself sufficient to establish that a tidal turbine supplies baseload power as regulators define it.
- Storms and river runoff make tidal-stream output entirely unpredictable.
- Tidal-stream turbines cannot qualify as baseload power under any regulatory standard.
- Astronomical tide schedules are less reliable than advocates claim.
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