Answer:
Clean and sterilize equipment and machinery to use with patients.
Explanation:
The task that could be finished by an emergency and the relief worker would be that the equipment should be clean that is used for the patients. It should be free from any infection that caused by bacteria. Also it should be sure that this would be taken care and at the same time the patients would not suffered from any infection or any injury that could caused by non-clean of the equipment
Therefore the option A is correct