What is defined as the ability to perform a specific activity effectively?

The correct choice highlights that a skill is specifically defined as the ability to perform a particular task or activity successfully and efficiently. Skills are often developed through practice, training, or experience, and represent a level of proficiency in carrying out specific functions. For instance, a person may have skills in areas such as communication, writing, or technical tasks, which indicate their capability to execute those activities competently.

In contrast to skills, knowledge refers to the information or understanding a person has about a subject, which may not necessarily translate into effective action. Talent typically denotes a natural aptitude or innate ability in certain areas, while technique refers to the specific methods or procedures used to carry out a task. Therefore, while all these terms are related to performance and ability, skill accurately captures the concept of effective execution of activities.