Final answer:
The correct statement regarding de Broglie's theory is that he proposed treating the electron as a wave, which was central to the development of quantum mechanics and led to him receiving the Nobel Prize.
Step-by-step explanation:
The correct statement is c. de Broglie proposed treating the electron as a wave. Louis de Broglie introduced the revolutionary idea that matter, such as electrons, could exhibit wave-like properties. This concept, known as wave-particle duality, is fundamental to the field of quantum mechanics. De Broglie suggested that the wavelength (λ) of a particle is given by the equation λ = h/(mv), where h is Planck's constant, m is the mass of the particle, and v is its velocity.
De Broglie's bold hypothesis was met with skepticism but was later confirmed by experimental evidence, such as electron interference patterns. His work led to the development of wave equations used to describe the behavior of matter particles and paved the way for a new era in quantum theory, earning him a Nobel Prize in 1929.