What is the primary function of parameters in Tableau?

Question $9$ options:

a$)$

The main use of parameters in Tableau is to organize worksheets and dashboards into hierarchical structures for improved navigation and analysis.

b$)$

Parameters in Tableau are used exclusively for changing the visual theme of dashboards and worksheets, such as colors and fonts.

c$)$

The primary function of parameters in Tableau is to serve as placeholders for user input, allowing users to interactively control and change the values passed to calculations, filters, and other elements within a visualization.