Question

A top down parser generates __________

(a) Rightmost Derivation

(b) Right most derivation in reverse

(c) Left most derivation

(d) Left most derivation in reverse

This question was posed to me in quiz.

Question is taken from Bottom-Up Parsing-1 topic in section Bottom Up Parsing of Compiler

Answer 1

Right answer is (c) Left most derivation

The best I can explain: Top-down parsing is a parsing strategy where one first looks at the highest level of the parse tree and works down the parse tree by using the rewriting rules of a formal grammar.