[Solved] Identify the error in the following Ruby code:module Walk def walk "Walking" end end class Person extend Walk end puts Person.new.walk | Ruby

Ruby - Modules and Mixins

Identify the error in the following Ruby code:

module Walk
  def walk
    "Walking"
  end
end

class Person
  extend Walk
end

puts Person.new.walk

ANoMethodError because walk is not an instance method

BSyntaxError due to extend usage

CNo error, outputs "Walking"

DTypeError because module cannot be extended

Step-by-Step Solution

Solution:

Step 1: Understand extend vs include
Using extend Walk adds module methods as class methods, not instance methods.
Step 2: Analyze method call
Person.new.walk calls walk on an instance, but walk is only a class method here, so it raises NoMethodError.
Final Answer:
NoMethodError because walk is not an instance method -> Option A
Quick Check:
Extend adds class methods, instance call fails [OK]

Quick Trick: Extend adds class methods; instance calls fail [OK]

Common Mistakes:

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