The correct option is A Power engineer
We can conclude the following result:
FlatNo.AgewisedecreasingQualificationName(3)Chess PlayerPower EngineerAmit(3)Cricket(Regional)Mech.EngineerManu(2)FootballDesign EngineerRohit(5)TennisQuality InspectorTarun(4)Cricket(National)Mech. EngineerAmbrish
The chess player is a Power Engineer.