Which of the following is an example of physical risk?

Physical risk refers to the potential harm or danger that can occur as a result of using a product or service. It encompasses concerns about personal safety and the risk of injury associated with consumer choices.

In this context, the correct answer highlights that an electric shock from a hair dryer presents a tangible risk to physical safety. This example involves a direct threat to an individual's health or well-being due to the product's potential malfunction or unsafe design. The concern here is rooted in the possibility of injury that can have immediate and serious consequences.

The other options, while they present different types of risks, do not pertain specifically to physical harm. For instance, financial loss relates to economic risk, the ineffectiveness of a product like aspirin pertains to performance risk, and embarrassment relates to social risk. Each of these encompasses valid consumer concerns but does not encapsulate the notion of physical danger in the same way that the risk of electric shock does.