[Solved] Why does this Ruby code raise an error?def book(title:, author:) puts "#{title} by #{author}" end book(title: 'Ruby 101') | Ruby

Ruby - Methods

Why does this Ruby code raise an error?

def book(title:, author:)
  puts "#{title} by #{author}"
end

book(title: 'Ruby 101')

Atitle keyword argument is invalid

BMissing required keyword argument author

CMethod call uses positional arguments incorrectly

DNo error, code runs fine

Step-by-Step Solution

Solution:

Step 1: Check method parameters
Both title and author are required keyword arguments without defaults.
Step 2: Analyze method call
Call provides only title, missing author, causing error.
Final Answer:
Missing required keyword argument author -> Option B
Quick Check:
All required keyword args must be provided [OK]

Quick Trick: All required keyword args must be passed [OK]

Common Mistakes:

MISTAKES

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