Odd one out : One is not a key checklist for lifelong learningGroup of answer choicesfree-willedSelf-improvementOften costlyInformal

Analyzing the Options

To identify the odd one out among the options, let's analyze each choice in the context of lifelong learning.

1. Free-willed: This suggests an individual's ability to make choices and take control of their learning journey, which aligns with the principles of lifelong learning.
2. Self-improvement: This is a fundamental aspect of lifelong learning, emphasizing continuous personal development and growth.
3. Often costly: This implies that lifelong learning may require financial investment, which can be true but is not a definitive characteristic of lifelong learning, as there are many free resources.
4. Informal: This refers to the nature of some learning being non-structured and occurring outside of traditional educational settings, which is a common feature of lifelong learning.

Conclusion

The odd one out is "Often costly". While the other options relate directly to the concepts and practices associated with lifelong learning, the idea of lifelong learning itself does not inherently imply that it must be expensive. In fact, many lifelong learning opportunities are accessible at no cost.