A strong magnetic field is applied on a stationary electron:

The correct answer is Option (3) → The electron remains stationary

The magnetic force on a charge q moving with velocity \( \vec{v} \) in a field \( \vec{B} \) is \( \vec{F} = q(\vec{v}\times\vec{B}) \). For a stationary electron \( \vec{v} = 0 \), so \( \vec{F} = 0 \) however strong the field is. With no force acting, the electron stays at rest. It is not pushed along or against the field, since a magnetic force can never act along \( \vec{B} \) in any case, and nothing in the force law makes it spin.

NCERT (2026-27):
Magnetic Field, Lorentz Force – “… (iii) The magnetic force is zero if charge is not moving (as then \( |\vec{v}| = 0 \)). Only a moving charge feels the magnetic force.”