An instructor has placed the learners into groups to discuss several topics. When the instructor walked around to monitor the group progress, the learners were off-task. Which of the following contributes MOST frequently to this situation? 

Answer options:

A. The learners were disinterested in group discussions about the topics.
B. The learners were neither familiar with nor understood the assigned topics.
C. The learners were not comfortable with the members of the group.
D. The learners were ready for a break and the instructor failed to recognize this.

B