The antiparticle of electron is:

A) Positron
B) α-particle
C) proton
D) β-particle

The antiparticle of an electron is A. Positron.

A positron is a subatomic particle that has the same mass as an electron but carries a positive electric charge, whereas an electron carries a negative electric charge. When an electron and a positron collide, they can annihilate each other, releasing energy in the form of gamma rays. This phenomenon is a common example of matter-antimatter annihilation.