Answer:
A. el voluntario trabaja tan duro como el empleado.
Step-by-step explanation:
The original English sentence "The volunteer works as hard as the employee" indicates that both the volunteer and the employee work with the same level of effort or dedication. The Spanish translation "el voluntario trabaja tan duro como el empleado" conveys the same meaning, expressing that the level of hard work is equal for both the volunteer and the employee.