[Solved] About how many stars are visible to the naked eye on a clear, dark night away from city lights? A)a couple thousand B)a few hundred billion C)a few dozen D)several million Mental Ability: The capacity to learn, reason, understand, and similar forms of mental activity; aptitude in grasping truths, relationships, facts, meanings, etc. Cognitive Ability: The capacity of an individual to perform mental processes related to learning and problem solving, including memory, reasoning, understanding, and decision making. Human Capital: The collective skills, knowledge, or other intangible assets of individuals that can be used to create economic value for the individuals, their employers, or their community. Intellectual Capital: The collective knowledge, information, intellectual property, and experience that an organization possesses.