In an expert system, the process of beginning with a possible solution and using the knowledge in
the knowledge base to justify the solution based on the raw input data is called:

A.
Forward chaining

B.
Dynamic reasoning

C.
A blackboard solution

D.
Backward chaining

Explanation:
Backward chaining is generally used when there are a large number of possible solutions relative to
the number of inputs. *Answer Dynamic reasoning is a distracter. Answer forward chaining, is the
reasoning approach that can be used when there is a small number of solutions relative to the
number of inputs. The input data is used to reason forward to prove that one of the possible
solutions in a small solution set is the correct one. *The blackboard is an expert system reasoning
methodology in which a solution is generated by the use of a virtual blackboard wherein information
or potential solutions are placed on the blackboard by a plurality of individuals or expert knowledge
sources. As more information is placed on the blackboard in an iterative process, a solution is
generated.