When it comes to exploring data visually, there are two general modes of discovery that directly relate to the needs of the user. Pick the two modes and their primary application $($Pick two$)$:

Select one or more:

a$.$

Exploratory discovery, which allows the user to find new patterns and relationships.

b$.$

Directed discovery, which allows the user to find answers to pre$-$known questions.

c$.$

Synthetic discovery, which combines multiple data models to arrive at a single view.

d$.$

Requirements discovery, which allows the user to isolate needs for a project.