Final answer:
The answer to the question is Gantt scheduling, which is used to manage project timelines, including start and finish dates, delivery dates, payment schedules, and vacations. It is represented in a bar chart format, making it a simplified project management tool.
Step-by-step explanation:
The correct answer to the question is a) Gantt. Gantt scheduling is a project management tool that is used to illustrate a project schedule. It simplifies the process by showing start and finish dates for different components of a project, including delivery dates, payment schedules, and vacation times among others. The Gantt chart is considered a simplified method because it displays this information in a straightforward, bar chart format that is relatively easy to understand and manage.
PERT (Program Evaluation Review Technique) and CPM (Critical Path Method) are more complex project management tools that involve mapping out every task that must be completed in a project. They are used to analyze and represent the work involved in completing a project. FIFO (First In, First Out), on the other hand, is an inventory management technique and is not related to scheduling.