How must appliances be placed in relation to the surrounding environment?

The correct answer highlights the importance of allowing access for service work when positioning appliances. Proper placement of appliances is crucial for functionality and maintenance. Ensuring that there is sufficient space around appliances allows technicians to perform necessary repairs and maintenance without difficulty. This ease of access can lead to more efficient service and can prevent damage to the appliance or surrounding area during maintenance activities.

Inadequate spacing can complicate tasks such as cleaning, inspections, or repairs, potentially leading to greater issues over time. While aesthetic integration, utility usage, and maintenance visibility are also important factors to consider, the primary focus in this case emphasizes the practical need for accessibility in servicing the appliances when they are placed. This makes option B the most relevant choice regarding the appropriate positioning of appliances in relation to their environment.