Final answer:
Learning is most possible when students are motivated, actively engaged, and have a clear purpose. A supportive and positive learning environment can also enhance learning.
Step-by-step explanation:
Learning is most possible under circumstances where individuals have a clear purpose, are motivated, and actively engage with the material. For example, when students are interested in a subject, they are more likely to be motivated to learn and retain information. Additionally, hands-on activities, discussions, and real-life examples can enhance learning by making it more interactive and applicable to real-world situations. Furthermore, creating a supportive and positive learning environment can also contribute to effective learning.