Final answer:
The older adult who is a need-to-know learner needs to know why they need to learn something after they undertake learning it.
Step-by-step explanation:
The statement that the older adult who is a need-to-know learner needs to know why they need to learn something after they undertake learning it is True. As a need-to-know learner, an older adult prefers to learn something when they have a specific reason or need for it. They are motivated by understanding the purpose and relevance of the knowledge they acquire. This approach allows them to directly apply what they learn and reinforces their understanding.
For example, if an older adult needs to learn how to use a computer for a specific task, such as managing finances or keeping in touch with family, they are more likely to be motivated to learn and retain the necessary skills because they see the practical value of it.