6. Programmer’s Hierarchical Interactive Graphics System (PHIGS) supports ___ grouping of 3D primitives called structures. A) Nested-hierarchical B) Single-hierarchical C) Multilevel-hierarchical D) Single-level- hierarchical
Correct choice is option A, Explanation - Programmer’s Hierarchical Interactive Graphics System (PHIGS) supports Nested-hierarchical grouping of 3D primitives called structures.
