What is a model for fine-grained authorization where the access is defined according to the attributes of the user, the attributes of the resource and the attributes of the environment?

What is a model for fine-grained authorization where the access is defined according to the attributes of the user, the attributes of the resource and the attributes of the environment?
A . Calls to action
B . Scaling out
C . Clustering
D . ABAC (Attribute Based Access Control)

Answer: D