Final answer:
Betsy is likely strongest in the Planning dimension of cognitive style since she emphasizes developing a clear agenda and task delegation.
Step-by-step explanation:
Based on Betsy's comment, it is most likely that she is strongest on the Planning dimension of cognitive style. Planning involves setting up clear agendas and determining tasks, which reflects Betsy's interest in organizing the meeting's objectives and assignments. This approach is indicative of a cognitive style that emphasizes structure and the coordination of activities and roles within a team to achieve specific outcomes.
Betsy's comment about developing a clear agenda and assigning tasks suggests that she is strongest on the dimension of Planning.