Question

(38) A
graph is the undirected graph with no parallel edges and no loops.
(39) The
node is the topmost node in the tree hierarchy.
(40) A
is a blueprint from which individual objects are created.

Answer 1

(38) A simple graph is the undirected graph with no parallel edges and no loops.
(39) The root node is the topmost node in the tree hierarchy.
(40) A class is a blueprint from which individual objects are created.