Which of the following statements best defines Carbon Monoxide (CO)?

The statement that defines Carbon Monoxide (CO) accurately describes it as a colorless, odorless, tasteless, combustible, and poisonous gas. Carbon monoxide is a byproduct of incomplete combustion of fossil fuels and is particularly concerning in confined spaces where ventilation is limited. Its lack of color, odor, and taste makes it especially dangerous because people may be unaware of its presence until they experience symptoms of carbon monoxide poisoning, which can include headaches, dizziness, confusion, and even death.

This understanding of CO as a poisonous gas is crucial for safety in mining and other environments where combustion engines are used. Awareness about its properties can help in implementing safety measures to prevent exposure. In contrast, the other options incorrectly characterize CO, either by stating that it is non-toxic or describing it as having color and odor, which misrepresents its true nature and the associated health risks.