Answer: c. Lack of flexibility
Explanation: Flexibility entails willing or prone to give way to the influence or opinions or needs of others. It also shows the ability of an individual, team or organisation to adjust or change itself to best meet the needs of the situation or environment. By scheduling school conferences and events during school hours, it translates to most parents like Dwayne's father who so much wish to attend such events (but due to their work schedule) cannot. The school therefore is exhibiting lack of flexibility.