The best thing to include in a business case when the return on investment (ROI) for an information security initiative is difficult to calculate is an estimated reduction in risk. Risk reduction is the expected benefit of implementing an information security initiative, as it reduces the likelihood and impact of threats and vulnerabilities that may affect the organization's information assets and systems. By estimating the reduction in risk, the information security manager can demonstrate the value and benefits of the information security initiative to the organization's performance, reputation, and competitiveness. The information security manager can also compare the estimated reduction in risk with the estimated cost of the information security initiative to determine its cost-effectiveness and feasibility. The other options are not the best thing to include in a business case, although they may be some inputs or outputs of the risk assessment process. A projected increase in maturity level is a potential outcome of implementing an information security initiative, as it improves the organization's capabilities and processes for managing information security risks. However, it does not necessarily reflect the actual reduction in risk or the ROI of the information security initiative. A projected cost over time is a component of calculating the ROI of an information security initiative, as it reflects the total cost of ownership and maintenance of the initiative. However, it does not indicate the expected benefit or value of the initiative. An estimated increase in efficiency is a possible benefit of implementing an information security initiative, as it may enhance the organization's productivity and performance. However, it may not be directly related to the reduction in risk or the ROI of the information security initiative.

Labeling information according to its security classification enhances the likelihood of people handling information securely. Security classification is a process of categoriz-ing information based on its level of sensitivity and importance, and applying appropri-ate security controls based on the level of risk associated with that infor-mation1. Labeling is a process of marking the information with the appropriate classifi-cation level, such as public, internal, confidential, secret, or top secret2. The purpose of labeling is to inform the users of the information about its value and protection re-quirements, and to guide them on how to handle it securely. Labeling can help users to:
* Identify the information they are dealing with and its classification level
* Understand their roles and responsibilities regarding the information
* Follow the security policies and procedures for the information
* Avoid unauthorized access, disclosure, modification, or destruction of the information
* Report any security incidents or breaches involving the information
Labeling can also help organizations to:
* Track and monitor the information and its usage
* Enforce access controls and encryption for the information
* Audit and review the compliance with security standards and regulations for the infor-mation
* Educate and train employees and stakeholders on information security awareness and best practices Therefore, labeling information according to its security classification enhances the likelihood of people handling information securely, as it increases their awareness and accountability, and supports the implementation of security measures. The other op-tions are not the primary benefits of labeling information according to its security clas-sification. Reducing the number and type of countermeasures required is not a benefit, but rather a consequence of applying security controls based on the classification lev-el. Reducing the need to identify baseline controls for each classification is not a bene-fit, but rather a prerequisite for labeling information according to its security classifica-tion. Affecting the consequences if information is handled insecurely is not a benefit, but rather a risk that needs to be managed by implementing appropriate security con-trols and incident response procedures. Reference: 1: Information Classification - Ad-visera 2: Information Classification in Information Security - GeeksforGeeks : Infor-mation Security Policy - NIST : Information Security Classification Framework - Queensland Government