Which of the following is MOST important to the successful implementation of an information security...

The successful implementation of an information security program depends largely on the availability and allocation of adequate security resources, such as budget, staff, technology, and training. Without sufficient resources, the program may not be able to achieve its objectives, comply with the security strategy, or address the security risks. Key performance indicators (KPIs), a balanced scorecard, and global security standards are also important elements of an information security program, but they are not as critical as the resource allocation.

References = CISM Review Manual, 16th Edition, page 69