The question asks for the definition of a critical on-site inspection of current security measures. a. security implementation*: This is the process of putting security measures into effect. b. security analysis*: This involves studying security risks and vulnerabilities. c. security survey*: This is a comprehensive, critical on-site examination and analysis of an organization's security posture, identifying vulnerabilities and recommending improvements. This matches the definition provided. d. security evaluation*: This assesses the effectiveness of existing security measures, often after they have been implemented, but a "survey" specifically refers to the on-site inspection aspect. The most fitting definition for a "critical on-site inspection of current security measures" is a security survey. The correct option is c. c. security survey That's 2 down. 3 left today — send the next one.