Answer:
The contract is discharged because of True Impossibility
Step-by-step explanation:
The situation in which the performing of the contract becomes impossible for a party to contract because of the change in situation which made it impossible for the party to contract to perform the contract. In such situation, the party is allowed to breach the contract.
In the given scenario, due to the death of the employee's death, the employer can breach the contract because Baldrick after death can not perform the serice (Dead people don't perform contracts). So performing of the conrtract is impossible here and Cozette is not liable for paying the rest amount of salary for the after death period.