If There Is Life on Another Planet Within Our Galaxy

If there is life on another planet within our galaxy, why would we expect to learn that this life would probably use the same narrow range of wavelengths of the electromagnetic spectrum as we do for a source of energy and information?

A) because all life must use the same electromagnetic spectrum by definition
B) because of the fundamental aspects of photon energy and light absorption
C) because this is the same wavelength that hits the Earth
D) because there is no other wavelength available in nature

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