Which of the following is generally NOT a characteristic of open-source software?

Open-source software is characterized by the availability of its source code, allowing users to see, modify, and distribute it freely. This means that options such as accessible source code, free to modify, and community-driven development are indeed core attributes of open-source software.

When we consider commercially developed software, it typically suggests that the software is created by a business or organization for profit. While there are instances where commercially developed software may also be open-source, the phrase "commercially developed" does not align with the foundational principles of open-source software, which prioritize community and collaboration over profit. Thus, this is why it is generally not seen as a characteristic of open-source software.