[Solved] Find the error in this Ruby code snippet:module Sample def self.greet puts 'Hello' end end include Sample greet | Ruby

Ruby - Modules and Mixins

Find the error in this Ruby code snippet:

module Sample
  def self.greet
    puts 'Hello'
  end
end

include Sample
greet

AError: undefined method 'greet' for main:Object

BNo error, prints 'Hello'

CSyntax error in module definition

DError: include cannot be used with modules

Step-by-Step Solution

Solution:

Step 1: Understand method type and include behavior
The method greet is a module method (defined with self.greet), not an instance method.
Step 2: Analyze the effect of include
Including the module only mixes in instance methods, so greet is not available as a standalone method after include.
Final Answer:
Error: undefined method 'greet' for main:Object -> Option A
Quick Check:
Module methods not mixed in by include = B [OK]

Quick Trick: Include mixes instance, not module methods [OK]

Common Mistakes:

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