Answer:
B. flextime plan.
Explanation:
A flextime plan is a schedule that allows employees to decide their start and finish hour which is what it is said in the case as Dee give her employees the option to choose when to begin and end their days. Also, this plan requires employees to always be at work at certain hours as it is indicated. This means that it is mandatory for employees to be at their job in certain times but out of that they can choose their schedule.