Answer:
its copyright has expired
Explanation:
If a work is in the public domain it means that it's copyrighte has been expired.
After the period of copyright protection has expired, a work becomes available for use without permission from the copyright owner; it is now said to be "in the public domain." Most works enter the public domain because their copyrights have expired.
A. browser
Web browsers are programs like internet explorer, safari, chrome. You use them to access web pages on the internet.
Thus is true
Encryption helps to keep data virtually safe
A code of ethics and professional conduct outlines the ethical principles that govern decisions and behavior at a company or organization. They give general outlines of how employees should behave, as well as specific guidance for handling issues like harassment, safety, and conflicts of interest.
Information can be transferred and passed way easier.