The correct answer is: C. Set of Rule & sequence of steps
A production rule is a rule that specifies how to transform one symbol string into another symbol string. It consists of a left-hand side (LHS) and a right-hand side (RHS). The LHS is a pattern that can match a substring of the input string, and the RHS is a replacement string that is substituted for the matched substring.
For example, the following production rule can be used to convert a string of lowercase letters to uppercase letters:
LHS: [a-z]
RHS: [A-Z]
This rule can be applied to the input string “hello”
to produce the output string “HELLO”.Production rules can be used to implement
a variety of algorithms, including pattern matching, parsing, and search. They are also used in artificial intelligence, where they are used to represent knowledge and to control the behavior of agents.Option A is incorrect because a production rule does not consist of a set of rules. It consists of a single rule.
Option B is incorrect because a production rule does not consist of a sequence of steps. It consists of a single rule that specifies how to transform one symbol string into another symbol string.
Option D is incorrect because a production rule is not an arbitrary representation to problem. It is a specific type of rule that is used to transform one symbol string into another symbol string.