A change in behaviour that occurs as a result of acquiring new information and putting it to use through practice is a definition for:

The definition provided describes a fundamental concept of learning, which is the process of acquiring new knowledge, skills, or behaviors through experience and practice. Learning often involves changes in behavior that stem from understanding and applying new information. This aligns closely with educational and training principles where individuals improve their capabilities and understanding by engaging with new content and concepts.

In this context, learning is not simply the passive reception of information; it emphasizes active engagement and application. The aspect of putting the new information to use through practice underscores the importance of reinforcement and application in solidifying that learning.

The other options pertain to different concepts. Motivation refers to the driving force behind individuals' actions and behaviors but does not specifically address the change that occurs from gathering and applying new information. Promotion typically relates to the process of raising awareness or support for a cause but is not directly linked to the concept of behavior change through learning. The law of effect is a principle from psychology that suggests behaviors followed by positive outcomes are likely to be repeated, but it doesn’t encompass the broad scope of learning as defined in the question. Therefore, the option that best fits the definition provided is learning.