To answer this question, you need to understand the concept of string interpolation and the different delimiting methods for strings.
String interpolation is a method of constructing a new string by including expressions or variables within a string literal. This allows for dynamic string creation based on the values of the expressions or variables.
Let's go through each option to understand why it is correct or incorrect:
Option A) Delimited by single quote - This option is incorrect. Strings delimited by single quotes in many programming languages do not support string interpolation. Instead, they are treated as string literals and do not evaluate expressions or variables within them.
Option B) Delimited by double quote - This option is incorrect. Although strings delimited by double quotes can support string interpolation in some programming languages, it is not universally true. Some programming languages use double quotes for string literals without string interpolation.
Option C) Delimited by <<< identifier - This option is correct. This is the delimiting method known as "here documents" or "heredoc" syntax. It is often used in programming languages like PHP to define strings that support string interpolation. The <<< identifier is used to start the heredoc, and the string is terminated by the same identifier on a line by itself.
Option D) All of the above - This option is incorrect. Only option C, delimited by <<< identifier, is known as string interpolation. The other options do not universally support string interpolation.
The correct answer is C) delimited by <<< identifier. This option is correct because it represents a specific delimiting method that supports string interpolation.