b. teaching yourself yoga by watching a yoga group in the park.
Explanation:
Observational learning explains the learning process by observing others, recalling the information and then reconstructing the observed behaviors. Consider about how a kid watches one another's parents wave and then mimics that behavior themselves. This cycle of watching and imitating others creates a considerable amount of learning. As per the question, learning yoga by first observing it in park and later applied to himself is an example of observational learning.
