Final answer:
The master cleaning schedule should include what is to be cleaned, who is to clean it, when it is to be cleaned, and how it is to be cleaned.
Step-by-step explanation:
The answer to your question is option B. The master cleaning schedule should include what is to be cleaned, who is to clean it, when it is to be cleaned, and how it is to be cleaned. Including the 'how' in the master cleaning schedule ensures that the cleaning process is standardized and consistent.