Which adjective refers to the exercise of good judgment?

The adjective "judicious" is directly related to the exercise of good judgment. It describes a quality of being wise, thoughtful, and prudent in making decisions. A judicious person considers the consequences of their actions, weighs options carefully, and acts in a manner that shows intelligence and foresight. This is an essential trait in a variety of contexts, including personal decision-making, professional responsibilities, and general problem-solving.

In contrast, the other choices do not convey any association with good judgment. "Impetuous" suggests a tendency to act quickly and without thought, which often leads to hasty or rash decisions. "Idolatrous" pertains to the worship of idols or excessive adoration, which has no relation to making wise decisions. "Indolent" describes a disposition towards laziness or avoidance of activity, again lacking any connection to sound judgment or decision-making. Therefore, "judicious" is the term that best encapsulates the concept of exercising good judgment.