[Solved] Identify the error in this Ruby code that tries to use a module for multiple inheritance:module Swimmable def swim "Swimming" end end class Animal include Swimmable include Flyable end | Ruby

Ruby - Modules and Mixins

Identify the error in this Ruby code that tries to use a module for multiple inheritance:

module Swimmable
  def swim
    "Swimming"
  end
end

class Animal
  include Swimmable
  include Flyable
end

AModules cannot define instance methods.

BYou cannot include more than one module in a class.

CThe module Flyable is not defined, causing a NameError.

DThe include keyword is misspelled.

Step-by-Step Solution

Solution:

Step 1: Check module definitions
The code defines Swimmable but does not define Flyable.
Step 2: Understand include behavior
Including an undefined module like Flyable causes a NameError because Ruby cannot find it.
Final Answer:
The module Flyable is not defined, causing a NameError. -> Option C
Quick Check:
Undefined module inclusion causes NameError = A [OK]

Quick Trick: Always define modules before including them [OK]

Common Mistakes:

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