Word processing software, spreadsheet software, database software, and presentation software are examples of what category of computer software?

I’d say platform as a service (paas) or application platform as a service (apaas) or platform base service is a category of cloud computing services that provides a platform allowing customers to develop, run, and manage applications without the complexity of building and maintaining the infrastructure typically associated with developing and launching an app.

Ithink the answer is a.