Asystem that exhibits reasoning similar to that of humans knowledgeable
in a particular field to solve a problem in that field is called:

A.
An expert system.

B.
A data warehouse.

C.
A neural network.

D.
A smart system.

Explanation:
Answer a smart system is a distracter.
A data warehouse, is a repository of information from heterogeneous
databases that is available to users for making queries.
A neural network is a self-learning system that bases its
operation on the model of the functioning of biological neurons.