Answer:
D. maintenance
Explanation:
The stages of career development according to Donald Super are divided into 5; the first is the growth stage, the second is exploration stage, the third is establishment and the fourth is the maintenance stage and the fifth is the disengagement stage
In the maintenance stage, the age range is from 45 - 59 years. Such employees are holding on in their chosen profession, the are also updating their skills in that profession (the employee's class to learn how to program the next generation of programmable logic controllers)
Employees in the area of technology in the maintenance stage especially feel like abreast happenings, innovation and development so this pushes them to further develop themselves.
