Question

What do we mean by expression substitution?

(a) Embedding the value of Ruby expression into a string using #{  }

(b) Substituting string functions

(c) Storing string value

(d) None of the mentioned

This question was addressed to me by my college director while I was bunking the class.

The doubt is from Formatting String Methods in section Ruby Basics of Ruby

Answer 1

Right answer is (a) Embedding the value of Ruby expression into a string using #{  }

Explanation: Strings are displayed #{} sequence.