Question

computer safety control settings are most often used to
protect children.
eliminate hacking attempts.
block harmful content.
cure viruses.

Explanation:

• Protecting children is a specific use of some safety controls but not the primary general use.
• Eliminating hacking attempts is more about security measures like firewalls/antivirus, not just "safety control settings" broadly.
• Computer safety control settings (like content filters, parental controls in a general sense) are often used to block harmful content (e.g., inappropriate websites, malware - related content).
• Safety control settings don't "cure" viruses; antivirus software or removal tools do that.

Answer:

C. block harmful content.