Given a grammar:
S₁ → Sc
S → SA | A
A → aSb | ab
There is a rightmost derivation:
S₁ ⇒ Sc ⇒ SAc ⇒ SaSbc
Thus, SaSbc is a right sentential form, and its handle is

Question

Given a grammar: S₁ → Sc S → SA | A A → aSb | ab There is a rightmost derivation: S₁ ⇒ Sc ⇒ SAc ⇒ SaSbc Thus, SaSbc is a right sentential form, and its handle is

Accepted Answer

Correct answer: D — To identify the handle, analyze the final step of the rightmost derivation: SAc ⇒ SaSbc. In this step, the non-terminal A is replaced by aSb using the production rule A → aSb. The handle is the substring that reduces back to A in this rightmost derivation, which corresponds to aSb.

Answer

A. SaS

Answer

B. bc

Answer

C. Sbc

Answer

D. aSb

Given a grammar: S₁ → Sc S → SA | A A → aSb | ab There is a rightmost…