Answer:
C. transaction processing.
Explanation:
-Expert systems are systems that are created to fix problems and make decisions like an expert in a specific area.
-Decision support systems are systems that analyze data to help make decisions and support the measures taken.
-Transaction processing refers to analyzing and supporting HR decisions using calculations.
-Transformational processing refers to a process in which input is taking, it is transformed and then the output is given to customers.
According to this, the answer is that in this scenario, the manager proposes using transactional processing because he proposed that the activities involved in the hiring decisions are documented using computers which means that the systems would be used to support the HR decisions.