Final answer:
X-rays have wavelengths in the range of nanometers, specifically between 0.01 nanometer and 20 nanometers. They are more energetic than visible light, which allows them to penetrate materials to varying degrees.
Step-by-step explanation:
The correct answer for the question on the order of X-ray wavelengths is c) Nanometers. X-rays are part of the electromagnetic spectrum and have wavelengths ranging from 0.01 nanometer to 20 nanometers. This places them in the electromagnetic spectrum between ultraviolet radiation and gamma rays. With shorter wavelengths (1 × 10−8 - 5 × 10−12 m) and higher frequencies (3 × 1016 - 6 × 1019 Hz) compared to visible light, X-rays have high energies, which allow them to penetrate various materials, including the soft tissues of the human body, but are generally absorbed by bones.