What, specifically, was the most important thing Jenny did to promote cognitive development in her students?  a. She introduced the activity by having students gather around her on the rug.  b. She...

What, specifically, was the most important thing Jenny did to promote cognitive development in her students?

 a. She introduced the activity by having students gather around her on the rug.

 b. She provided direct, concrete experiences for her students through her learning activities.

 c. She accepted every answer that students provided, avoiding damaging criticism and feedback.

 d. She called on a large number of students, encouraging participation in her activity.