Final answer:
The themes listed relate to business and technology, but without the specific textbook context, it's unclear which theme does not belong. These topics typically interrelate in the study of business administration and management.
Step-by-step explanation:
The question seems to be asking about themes that are typically covered in a textbook focused on business, computers, technology, or related fields. The list given includes 'enterprise systems,' 'risk assessment,' 'e-business,' and 'internal control.' Without more context, it is not clear which one of these would not be a theme of this particular textbook. In general, though, these topics are often interrelated, with enterprise systems encompassing e-business and internal control functionalities, and risk assessment being an important part of both managing these systems and guiding e-business strategies.
Subjects such as enterprise systems are crucial for understanding how businesses use large-scale software applications to support organizational processes and report on their operations. Risk assessment is an integral part of a business's decision-making process, considering the potential negative outcomes associated with action or inaction. E-business involves conducting business processes on the Internet, and internal control refers to processes designed to provide reasonable assurance regarding the achievement of objectives in operational effectiveness and efficiency, reliable financial reporting, and compliance with laws and regulations.