What action did Scotiabank undertake to ensure greater engagement during its interactive training sessions?

A) offered everyone a small financial reward for attending
B) provided pre-session information to each trainee to establish a common purpose
C) included quizzes and employee participation in opinion polls during training
D) paid careful attention to ensure employees' learning styles were considered

Including quizzes and employee participation in opinion polls during training is an effective way to engage employees and ensure they are actively participating in the learning process. This approach helps to make the training sessions more interactive and encourages employees to share their thoughts and ideas. The other options (A, B and D) are not effective methods for increasing engagement during training sessions. Offering financial rewards for attending may create a short-term incentive, but it may not promote long-term engagement, while providing pre-session information may not necessarily increase participation in the session. Lastly, while taking into account employees' learning styles is important, it may not necessarily increase engagement during interactive training sessions.