Why do you think the combined wave is more powerful than either the transverse or longitudinal wave

Combined wave is more powerful than longitudinal and transverse waves alone because it is a combination of the properties of both. Longitudinal waves and transverse waves alone only transfer energy on each wave motion. When combined, this results in an Oscillatory wave that allows for the transfer of mass and energy to occur. One great example is water waves. Water waves are a combination of both Transverse and longitudinal waves. The water particles move in an oscillatory motion which allows us to harness our so-called hydroelectric energy because of the high amount of mass and energy transfer it can produce.

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The right answer is b hydrogen bonds!