Answer:
A) Open-source web browsers allow non-paid access and distribution.
Step-by-step explanation:
Each and every software has a source code, which is the set of lines of programming code that forms the entire structure of the software.
When you purchase software, you are not purchasing your source code from you, meaning there is no legal authorization to give you access to the code. The same is true of most freeware programs.
However, when the program in question is open source, it means that its source code is open, free for any user to access, read and modify its content - either for testing or for optimizing functionality.
Example: The GNU / Linux operating system is a great example of open source software. Not surprisingly, their distributions are numerous - they are also available with open source.