The correct answer is: C. information processor subsystem
The information processor subsystem is responsible for collecting, storing, and processing data. It is the foundation of all other functional information systems.
The internal accounting subsystem is responsible for recording and reporting financial information.
The environmental intelligence subsystem is responsible for gathering and analyzing information about the external environment.
The system analysis subsystem is responsible for designing and developing new information systems.
None of the above options are subsystems that appear in each of the functional information systems.