正解:A
The primary objective of a business impact analysis (BIA) is to determine recovery priorities. The BIA is used to identify and analyze the potential effects of an incident on the organization, including the financial impact, operational impact, and reputational impact. The BIA also helps to identify critical resources and processes, determine recovery objectives and strategies, and develop recovery plans. Reference: Certified Information Security Manager (CISM) Study Manual, Chapter 4, Business Impact Analysis.