Answer:
D.The events are disjoint. They cannot occur at the same time.
Step-by-step explanation:
Event A = randomly selecting a french horn from the instrument assembly line and getting one that is free of defects
Event B = randomly selecting a french horn from the instrument assembly line and getting one with a dented bell
The two Events are disjoint because they cannot happens at the same time. It is either a french horn is free of defects or it has defects.
Disjoint event is when two event cannot occur at the same time.