Which risk is NOT associated with the specified WHMIS symbol?

The answer choice indicating that it may cause environmental damage from fumes is the correct option because this risk is generally not associated with the specified WHMIS symbol known for hazardous materials. WHMIS (Workplace Hazardous Materials Information System) symbols are designed to identify specific hazards related to chemicals and materials used in the workplace.

The other options directly relate to physical and chemical properties of substances commonly indicated by WHMIS symbols. For example, the possibility of a substance reacting with water pertains to certain reactive materials, indicating a significant hazard that could lead to dangerous situations like explosions or violent reactions.

Similarly, describing a substance as chemically unstable highlights its potential to undergo unexpected reactions or decomposition under normal circumstances, which is indicative of a well-known hazard. Lastly, the risk of explosion from exposure to shock or heat clearly relates to materials classified as explosives or those that can become explosive under specific conditions.

In contrast, concerns regarding environmental damage are typically addressed separately from immediate physical or chemical risks posed by the hazardous materials themselves, which is why this particular risk does not align with the WHMIS symbol in question. Understanding the specific nature of each WHMIS symbol helps in assessing the actual risks associated with particular substances accurately.