A group$-$based incentive plan that provides employees with the right to purchase shares of their company's stock at some established price $($often its market value$)$ for a given period of time is called a$($n$)\_\_\_\_\_\_.$

Question $6$ options:

$1)$

deferred profit$-$sharing plan

$2)$

improshare plan

$3)$

stock option plan

$4)$

Scanlon plan