Final answer:
The ignition temperature of carbon monoxide is approximately 1128°F (609°C); therefore, the closest answer provided is option C, 1128°F.
Step-by-step explanation:
The ignition temperature of carbon monoxide (CO) is not explicitly stated in the provided materials, but it is generally known through scientific research. The ignition temperature, in the context of fire safety, is the lowest temperature at which CO will spontaneously ignite in the presence of air without a spark or flame. It's essential to understand this property to prevent CO-related fire hazards. Based on external authoritative chemical safety resources, the ignition temperature of carbon monoxide is approximately 1128°F (609°C). Therefore, none of the options (A-D) directly match this value, but the closest is option C, which is 1128°F.