Final answer:
Statement (c), which asserts that diversified businesses gain little from ERP installation, is the least accurate. Diversified businesses can indeed benefit substantially from an ERP through improved data visibility and streamlined processes.
Step-by-step explanation:
In determining which statement about ERP installation is least accurate, we need to review the options provided. Statement (a) posits that process reengineering is typically necessary for ERP success, which is accurate because ERP systems often require businesses to adapt their processes to the software. Statement (b) states that some business processes may not be supported by ERPs, which can indeed be a complication as ERPs have a set structure and may not cater to every unique process without customization. Statement (d) suggests only the needed modules should be installed, which is true as businesses often select the modules that align with their processes to avoid unnecessary complexity.
However, statement (c) claims that when a business is diversified, little is gained from ERP installation, which is the least accurate. While diversified businesses may face more complexity in integrating their various operations under an ERP system, the benefits of doing so—such as improved data visibility and process streamlining—can be substantial. Therefore, even diversified businesses can gain significant value from ERP implementation.