Which of the following is not the cause of biodiversity loss?

Endemism

The correct answer is Option (3) -Endemism

The accelerated rates of species extinctions that the world is facing now are largely due to human activities. There are four major causes :

Habitat loss and fragmentation

Over-exploitation

Alien species invasions

Co-extinctions

Endemism means species confined to that region and not found anywhere else. The area or region can vary in size and is defined or identified in different ways.