An electron is released from rest in a region of uniform electric and magnetic field acting parallel to each other. The electron will
Correct option is A. move in a straight line
As the electron enters the field, the electric field applies a force $$(F = qE)$$ in a forward direction. Now the magnetic field is parallel to the direction of motion of the particle, So there will be no effect of the magnetic field. On the electron.
So, it will move in straight line.
Option (A) is correct.