Explanation The most useful source when planning a business-aligned information security program is a Business Impact Analysis (BIA). A BIA is a process of identifying and evaluating the potential effects of disruptions to an organization's operations, and helps to identify the security controls and measures that should be implemented to reduce the impact of those disruptions. The BIA should include an assessment of the organization's information security posture, including its security policies, risk register, and enterprise architecture. With this information, organizations can develop an information security program that is aligned to the organization's business objectives.