Learning is a relatively change of behaviors resulting from minor, practice unstable, experience flexible, performance permanent, experience dpermanent, experience

I believe the answer is: Permanent;experiences.
The effects of learning could be decreased if it left untouched for a long period of time. But if that person decided to re-learn it, it would take far less time compared to when learning it for the first time.
And for most people, the main method of learning is by experiencing the new task first-hand.

The correct answer is a

What’s the