Which of the following best explains the wave-like behavior of electrons as observed in the double-slit experiment?

The best explanation is that each electron is described by a quantum wavefunction that can travel through both slits simultaneously and then interfere with itself; this wavefunction is what gives rise to the observed pattern of bright and dark bands. When an electron passes the slits, its wavefunction splits into two parts that propagate along different paths, and the amplitudes of these parts add together, producing constructive and destructive interference. The probability of finding the electron at a particular spot on the screen is proportional to the square of the total amplitude, so regions where the waves add give bright fringes and where they cancel give dark fringes. A simple analogy is dropping a stone in a pond: each splash spreads out, overlaps, and creates ripples that reinforce or cancel each other, just like the electron’s wavefunction. Thus, the double‑slit experiment shows that electrons behave as waves in the sense that their probability distribution follows wave interference.