Given the module and classes below, what will puts Cat.new.sound output?

hard📝 Application Q15 of 15

Ruby - Modules and Mixins

Given the module and classes below, what will puts Cat.new.sound output?

module AnimalSounds
  def sound
    "Generic sound"
  end
end

class Dog
  include AnimalSounds
  def sound
    "Bark"
  end
end

class Cat
  include AnimalSounds
end

ABark

BNoMethodError

CGeneric sound

Dnil

Step-by-Step Solution

Solution:

Step 1: Check method definitions in classes
Class Dog overrides sound method with "Bark". Class Cat does not override it.
Step 2: Determine method lookup for Cat instance
Since Cat includes AnimalSounds and does not override sound, calling sound on Cat.new uses the module's method returning "Generic sound".
Final Answer:
Generic sound -> Option C
Quick Check:
Included method used if no override [OK]

Quick Trick: Class method overrides module method if defined [OK]

Common Mistakes:

Assuming Cat uses Dog's sound method
Expecting NoMethodError for missing method
Confusing instance and class methods

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Given the module and classes below, what will puts Cat.new.sound output?

Step 1: Check method definitions in classes

Step 2: Determine method lookup for Cat instance

Final Answer:

Quick Check:

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