An advantage of a multiple heating boiler plant is:

The advantage of a multiple heating boiler plant is that it allows for flexibility in operation, which includes the ability to operate with different fuel types simultaneously. This is particularly beneficial in a situation where there might be fluctuations in fuel availability or costs. By using multiple boilers, operators can choose the most economical or optimal fuel for each unit based on current conditions.

This setup also allows for redundancy, meaning that if one boiler needs maintenance or goes offline, the others can continue to function without significant disruption to the heating system. This kind of operational flexibility enhances efficiency and ensures reliable service, which is a crucial aspect of any heating system.

Other options may offer advantages in different contexts, but the ability to utilize multiple fuel types simultaneously is a significant advantage of a multiple heating boiler plant, making it adaptable and efficient in various situations.