Which of the following is a characteristic of halon fire suppression systems?

Halon fire suppression systems are particularly effective on Class B and C fires, which include flammable liquids and gases as well as electrical fires, respectively. The unique properties of halon agents, such as their ability to interrupt the chemical reaction of combustion, make them suitable for extinguishing these types of fires quickly and efficiently.

In contrast, other options present characteristics that do not apply to halon systems. For example, halon does not leave a sticky residue, which is an advantage in environments where clean-up is a concern, such as in data centers or museums. Additionally, while halon is not recommended for use in spaces occupied by humans during discharge, it is not inherently unsafe for human exposure in terms of toxicity under certain conditions. Furthermore, halon systems do not require high temperatures to activate since they can be deployed through manual activation or automatic detection systems regardless of temperature conditions.