The factor that has the greatest influence on the successful integration of information security within the business is organizational structure and culture because they determine how information security is organized, governed, and supported within the organization, and how information security roles and responsibilities are defined, assigned, and communicated across different levels and functions. Risk tolerance and organizational objectives are not very influential because they do not affect how information security is integrated within the business, but rather what information security aims to achieve or protect. The desired state of the organization is not very influential because it does not affect how information security is integrated within the business, but rather what the organization aspires to be or do. Information security personnel are not very influential because they do not affect how information security is integrated within the business, but rather who performs information security tasks or activities. References: https://www.isaca.org/resources/isaca-journal/issues/2016
/volume-4/technical-security-standards-for-information-systems https://www.isaca.org/resources/isaca-journal
/issues/2017/volume-2/how-to-align-security-initiatives-with-business-goals-and-objectives

Cost-benefit analysis results are the best way to support the business case for an increase in the information security budget because they help to demonstrate the value and return on investment of the proposed security initiatives or projects. A cost-benefit analysis is a method of comparing the costs and benefits of different alternatives or options, taking into account both quantitative and qualitative factors. A cost-benefit analysis helps to justify the need and feasibility of the security budget, as well as to prioritize the security spending based on the expected outcomes and impacts. Therefore, cost-benefit analysis results are the correct answer.
References:
https://www.cisa.gov/resources-tools/resources/business-case-security
https://www.cisa.gov/resources-tools/resources/isc-best-practices-making-business-case-security
https://risk3sixty.com/2020/09/21/how-to-build-a-business-case-for-security-initiatives-part-4/

The best response for the organization to reduce risk from increasing cyberattacks is to revalidate and mitigate risks to an acceptable level. This means that the organization should review its current risk profile, identify any new or emerging threats, vulnerabilities, or impacts, and evaluate the effectiveness of its existing controls and countermeasures. Based on this analysis, the organization should implement appropriate risk treatment strategies, such as avoiding, transferring, accepting, or reducing the risks, to achieve its desired risk appetite and tolerance. The organization should also monitor and review the risk situation and the implemented controls on a regular basis, and update its risk management plan accordingly. This approach is consistent with the ISACA Risk IT Framework, which provides guidance on how to align IT risk management with business objectives and value12.
The other options are not the best responses because they are either too narrow or too reactive. Increasing budget and staffing levels for the incident response team may improve the organization's ability to respond to and recover from cyberattacks, but it does not address the root causes or the prevention of the attacks.
Implementing an intrusion detection system (IDS) may enhance the organization's detection and analysis capabilities, but it does not guarantee the protection or mitigation of the attacks. Testing the business continuity plan (BCP) may verify the organization's readiness and resilience to continue its critical operations in the event of a cyberattack, but it does not reduce the likelihood or the impact of the attack. References =
* Risk IT Framework 1
* CISM Review Manual, 16th Edition | Print | English 2, Chapter 3: Information Risk Management, pages
97-98, 103-104, 107-108, 111-112.