You want to categorize ages into groups using a Ruby case with ranges. Which code correctly assigns 'Child' for ages 0-12, 'Teen' for 13-19, and 'Adult' for 20 and above?

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Ruby - Control Flow

You want to categorize ages into groups using a Ruby case with ranges. Which code correctly assigns 'Child' for ages 0-12, 'Teen' for 13-19, and 'Adult' for 20 and above?

Aage = 15\ncase age\nin 0..12 then puts 'Child'\nin 13..19 then puts 'Teen'\nin 20.. then puts 'Adult'\nend

Bage = 15\ncase age\nin 0..12 then puts 'Child'\nin 13..19 then puts 'Teen'\nin 20..100 then puts 'Adult'\nend

Cage = 15\ncase age\nin 0..12 then puts 'Child'\nin 13..19 then puts 'Teen'\nelse puts 'Adult'\nend

Dage = 15\ncase age\nin 0..12 then puts 'Child'\nin 13..19 then puts 'Teen'\nin 20-100 then puts 'Adult'\nend

Step-by-Step Solution

Solution:

Step 1: Understand range patterns and else usage
Ranges 0..12 and 13..19 cover child and teen. Adults are 20 and above, so else covers all >=20.
Step 2: Evaluate each option
age = 15\ncase age\nin 0..12 then puts 'Child'\nin 13..19 then puts 'Teen'\nin 20.. then puts 'Adult'\nend uses 20.. which is invalid syntax. age = 15\ncase age\nin 0..12 then puts 'Child'\nin 13..19 then puts 'Teen'\nin 20..100 then puts 'Adult'\nend uses 20..100 but excludes ages above 100. age = 15\ncase age\nin 0..12 then puts 'Child'\nin 13..19 then puts 'Teen'\nin 20-100 then puts 'Adult'\nend uses invalid 20-100. age = 15\ncase age\nin 0..12 then puts 'Child'\nin 13..19 then puts 'Teen'\nelse puts 'Adult'\nend uses else for adult, correctly covering all 20+ ages.
Final Answer:
age = 15\ncase age\nin 0..12 then puts 'Child'\nin 13..19 then puts 'Teen'\nelse puts 'Adult'\nend -> Option C
Quick Check:
Use else for open-ended ranges [OK]

Quick Trick: Use else for open-ended ranges in case [OK]

Common Mistakes:

Using invalid range syntax like 20..
Not covering all ages above 20
Using dash instead of two dots

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You want to categorize ages into groups using a Ruby case with ranges. Which code correctly assigns 'Child' for ages 0-12, 'Teen' for 13-19, and 'Adult' for 20 and above?

Step 1: Understand range patterns and else usage

Step 2: Evaluate each option

Final Answer:

Quick Check:

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