Option a, With respect to the employment-at-will doctrine, this is an example of the doctrine .
Explanation:
Under labor law reintegration applies to the reinstatement of the employee into a position he has quit without losing seniority or other benefits. Typically required, along with the severance pay, under unfair situations, by an organization such as the National Labor Relations Board or the judiciary
Reinstatement is open for those who have served a government job or work position in the past. The reinstallation privilege does not; however ensure an offer to work.
A legal doctrine is a history, a set of rules, practices, or measures which are often laid down in common law by precedent, by which rulings in a particular legal case can be made.