The correct answer to the question is : A) Long wavelengths and low frequencies.
Step-by-step explanation:
From Planck's quantum theory we know that the energy of any electromagnetic wave having certain frequency is E =
.
Here,
is the frequency of the wave.
Hence, more is the frequency of the wave, the wave is more energetic.
We know that wavelength and frequency are inversely proportional to each other.
Hence, a low energy wave means a wave having long wavelength or low frequency.