[Solved] Identify the error in the following Ruby module declaration:module Tools def help "Help message" end end Tools.help | Ruby

Ruby - Modules and Mixins

Identify the error in the following Ruby module declaration:

module Tools
  def help
    "Help message"
  end
end

Tools.help

ANo error, code runs fine

BMissing 'end' keyword for module

CMethod 'help' should be defined with 'self.' to call on module

DModule name should be lowercase

Step-by-Step Solution

Solution:

Step 1: Check method definition inside module
The method help is defined as an instance method, but called on the module directly.
Step 2: Understand method call context
To call Tools.help, help must be a module method defined with self.help.
Final Answer:
Method 'help' should be defined with 'self.' to call on module -> Option C
Quick Check:
Module methods need 'self.' prefix to be called on module [OK]

Quick Trick: Use 'def self.method' for module-level methods [OK]

Common Mistakes:

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