The correct answer is B. After their shift.
Explanation
food working service is a profession in which a person is in charge of handling food in a restaurant, a supermarket, a food store, or another business where food must be handled. This work must be carried out with high standards of cleanliness and health because if food is contaminated, it can cause viral and bacterial diseases to the people who consume it.
Therefore, the person who performs this work is required to wash their hands every time they are exposed to situations in which they must be contaminated, such as after using the bathroom, after handling raw meat and after handling raw fruit. Additionally, when he/she work shift is over, he/she do not need to wash his/her hands because he/she are no longer going to handle food. According to the above, the correct answer is B.
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