Which of the following is a possible sign of insulin shock?

Moist skin and tremors are significant signs of insulin shock, which is also referred to as hypoglycemia. Insulin shock occurs when there is an excessive amount of insulin in the body relative to the available glucose, leading to a dangerously low blood sugar level. As the body struggles to provide sufficient glucose to the brain and other organs, it triggers a release of stress hormones, which can manifest as symptoms like sweating (moist skin) and shaking or tremors.

In contrast to this, increased thirst typically indicates dehydration or high blood sugar levels rather than insulin shock. Dry skin is also more commonly associated with high blood sugar levels, as it can suggest inadequate hydration or diabetes complications. A pale complexion might occur in various medical situations, such as shock or low blood pressure, but it is not specifically indicative of insulin shock. Therefore, the presence of moist skin and tremors distinctly signals that the individual is likely experiencing insulin shock, making this the correct answer.