Explanation
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.

The most appropriate information to communicate to senior management regarding information risk is the risk profile changes, which reflect the current level and nature of the risks that the organization faces. The risk profile changes can help senior management to understand the impact of the risks on the business objectives, the effectiveness of the risk management strategy, and the need for any adjustments or improvements. The risk profile changes can also help senior management to prioritize the allocation of resources and to make informed decisions.
References = CISM Review Manual, 16th Edition eBook1, Chapter 2: Information Risk Management, Section: Risk Communication, Subsection: Risk Reporting, Page 97.