Discussion
Gantt chart is used to solve the :
Answer: A
A Gantt chart is used for job sequencing problems.
A Gantt chart draws each job as a bar on a time axis, one row per machine or activity, so it shows when each job starts and finishes and where machines sit idle. In operations research it is the standard way to display and check a sequencing solution, for example Johnson's rule for n jobs on two machines, and to read off the total elapsed time.
Inventory problems are solved with EOQ models and stock-level diagrams, and replacement problems with cost-per-period tables, neither of which uses a time chart of job schedules, so 'all of the above' is too broad.
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