Which of the following income-tax return activities poses the least personal security risk?

To determine which income-tax return activities pose the least personal security risk, let's consider common activities associated with tax returns:

1. Filing Online Through Secure Portals: Using official tax agency websites or licensed software with strong encryption.
2. Filing Paper Returns via Mail: Sending paper forms through the postal service, which can be intercepted.
3. Using a Tax Preparer: Engaging a professional who handles sensitive information but may have data breaches.
4. Storing Tax Documents Physically: Keeping documents in a secure location, but may be vulnerable, if not protected.

Conclusion

Filing online through secure portals typically poses the least security risk, as these systems are designed with strong cybersecurity measures in place, unlike paper filings or sharing sensitive information with third parties.