[Solved] What is wrong with this module declaration?module Tools def use puts "Using tools" end end Tools.use | Ruby

Ruby - Modules and Mixins

What is wrong with this module declaration?

module Tools
  def use
    puts "Using tools"
  end
end

Tools.use

AMissing parentheses in method call

BMethod should be defined with self. prefix

CModule name should be lowercase

DCalling instance method on module without including it

Step-by-Step Solution

Solution:

Step 1: Understand method type
The method use is an instance method inside the module.
Step 2: Calling instance method on module
Calling Tools.use tries to call a module method, but use is not defined as a module method or included in a class, causing error.
Final Answer:
Calling instance method on module without including it -> Option D
Quick Check:
Instance methods need inclusion; module methods use self. prefix [OK]

Quick Trick: Instance methods require inclusion; module methods use self. prefix [OK]

Common Mistakes:

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What is wrong with this module declaration?