Which action is not a determining factor for the severity of an electric shock?

The correct answer identifies the conductance ratio of voltage versus time exposed as not being a determining factor for the severity of an electric shock. The severity of an electric shock primarily relies on three main factors: the amount of current flowing through the body, the amount of time a person is exposed to the electric current, and the body's physical condition at the time of the shock.

The amount of current determines the physiological effects experienced by the body; even a small current can be harmful under the right conditions. The duration of exposure is critical because the longer the body is in contact with the source of electricity, the more severe the potential injuries can be. Additionally, an individual's physical condition, including factors like hydration levels and existing health issues, can influence how their body responds to the current.

In contrast, the conductance ratio of voltage versus time exposed is less commonly referenced in evaluating shock severity. While voltage is important to understand the potential danger of electrical sources, the specific relationship between voltage and time as a conductance factor is not a standard criterion for assessing shock severity. This makes it the correct choice for the action that does not directly determine the severity of an electric shock.