Which of the following are examples of materials and supplies?

The answer is focused on identifying the types of items that fall under the category of materials and supplies used in various safety and sanitation contexts. Shampoos, disinfectants, and hair oils are all products that are used for cleanliness and maintenance in personal care settings. These materials not only contribute to the hygiene of the environment but also play essential roles in client care, ensuring that services are delivered safely and effectively.

Shampoos and hair oils are typical in hair or beauty salons for personal grooming, while disinfectants are critical for maintaining sanitary conditions and preventing the spread of infections. These items represent supplies that are commonly stocked and utilized in professional settings to ensure that standards of sanitation are met.

In contrast, the other options consist of items that are more associated with health and safety equipment or tools rather than direct materials or supplies used in services. Items like paper towels and gloves serve more specific purposes related to handling and cleanliness, while scissors and combs are tools used for tasks rather than supplies.