Answer:
Wave having a length of 9 meters and a height of 6 meters.
Explanation:
Assuming that this is a sound wave or an electromagnetic wave, we know that those have a constant speed.
The speed of sound and speed of light are the same for any sound or electromagnetic wave respectively.
And we also have the equation:
v = λ*f
Where:
v = velocity
f = frequency
λ = wavelength
And because v is a constant, we can write:
f = v/λ
Now the wavelength is in the denominator, then the wave with the smaller wavelength will be the one with a larger frequency.
The option with the smallest wavelength is
Wave having a length of 9 meters and a height of 6 meters.
Notice that the height of the waves is also given, this is actually related to the intensity of the wave, so that information does not affect this particular question.