Which of the following is a quaternary activity?

The correct answer is Option (2) → A person developing computer software for a banker.

Quaternary activities involve some of the following: the collection, production and dissemination of information or even the production of information. Quaternary activities centre around research, development and may be seen as an advanced form of services involving specialised knowledge and technical skills.

Examples include research, software development, data analysis, consultancy, etc.