Answer: B) Attention to model and motivation to imitate
Step-by-step explanation:
You are quite right, the answer is indeed option B but let me add a bit of an explanation.
Observational learning is a form of learning that involves observing the subject in question with a view to imitate the behavior or characteristics of the subject afterwards. For instance, children learning how to play a certain game by watching others do the same.
For Observational learning to happen however, attention needs to be paid to the subject/ model to properly grasp the behavior of interest. There must also be a motivation to imitate the behavior of interest for the person to even begin to observe the behavior and assimilate it in the first place.