A context-free grammar has a special nonterminal called the ____ symbol which stands for the entire top-level phrase being defined.
A) initial
B) start
C) forward
D) abstract

Question

Quizplus · Accepted Answer

The start symbol in a context-free grammar is the special nonterminal that represents the entire top-level phrase being defined. It is the nonterminal that is initially expanded to derive the rest of the string.

A Context-Free Grammar Has a Special Nonterminal Called the ____