Capacity management tools are PRIMARILY used to ensure that:

 Capacity management tools are primarily used to ensure that available resources are used efficiently and effectively to meet the current and future demands of the business. Capacity management tools can help monitor, analyze and optimize the performance and utilization of IT resources such as CPU, memory, disk, network, etc. The other options are not the primary purpose of capacity management tools, although they may be related or derived from them. References:

ISACA, CISA Review Manual, 27th Edition,chapter 4, section 4.32

ISACA, COBIT 2019 Framework: Introduction and Methodology, section 3.2