Which of these is a valid reason to reopen a class in Ruby?

easy📝 Conceptual Q2 of 15

Ruby - Class Methods and Variables

ATo rename the class

BTo add new methods to built-in classes

CTo change the class inheritance

DTo delete all methods of the class

Step-by-Step Solution

Solution:

Step 1: Identify common use cases for reopening classes
Reopening is often used to add new methods to existing classes, including built-in ones.
Step 2: Check other options
Renaming classes, changing inheritance, or deleting all methods are not done by reopening.
Final Answer:
To add new methods to built-in classes -> Option B
Quick Check:
Reopen classes = Add methods [OK]

Quick Trick: Use reopening to extend built-in classes safely [OK]

Common Mistakes:

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