Consider a spring$-$mass system with natural frequency ${}_0$ and driving frequency $.$ When does the beats phenomenon happen?

Beats happens when the driving frequency $$ and the natural frequency ${}_0$ satisfy ${}_0=1.$

Beats happens when the driving frequency $$ is close enough to the natural frequency ${}_0.$

Beats happens when the driving frequency $$ is much smaller than the natural frequency ${}_0.$

Beats happens when the driving frequency $$ and the natural frequency ${}_0$ satisfy ${}_0=ln(2).$

Beats happens when the driving frequency $$ and the natural frequency ${}_0$ satisfy $={}_0.$

None of the options displaved.