Choose the answer that corrects the statement: Visible light waves are at the upper end of the frequency spectrum, while x-ray waves fall at the lower end.

The statement requires a correction to accurately reflect the position of visible light and x-ray waves in the electromagnetic spectrum. Visible light waves sit in the middle of the spectrum, whereas x-rays are at the higher end, having shorter wavelengths and higher frequencies than visible light.

Selecting the correct answer involves understanding that the statement incorrectly places x-ray waves at the lower end of the frequency spectrum. By changing "x-ray" to "infrared" (which is not listed as a choice but illustrates the point) would clarify that x-ray waves indeed occupy a higher frequency range than visible light, thus making the original statement inaccurate.

The option chosen is correct in that it highlights this misrepresentation. X-rays should not be described as falling at the lower end of the frequency spectrum; they actually have much higher frequencies than the visible spectrum. Hence, recognizing this interchange between "x-ray" and something like "infrared" would lead to a correct representation of their positions on the frequency spectrum.