Final answer:
Wave A, with a higher amplitude than Wave B, has more energy, thus answer A is correct. Among the options provided, tsunamis are most dangerous because of their high amplitude, which leads to significant energy and potential for destruction.
Step-by-step explanation:
The energy of a wave is directly related to its amplitude. When two waves have the same frequency, wavelength, and speed but different amplitudes, the wave with the higher amplitude carries more energy. Therefore, Wave A, having a higher amplitude than Wave B, means that Wave A has more energy than Wave B. The correct answer is A. Wave A has more energy than wave B.
Concerning which of the options listed are dangerous mostly because of their amplitude, B. tsunamis are the correct answer. Tsunamis are large ocean waves usually caused by underwater earthquakes or other seismic activities. The amplitude of a tsunami, which pertains to the height of the wave, is a significant factor in the amount of energy it can carry and the extent of damage it can cause when it reaches shore. The larger the amplitude, the more powerful and potentially destructive the tsunami can be.