12.
What is the primary purpose of the else keyword in Ruby exception handling?

13.
What is the purpose of the retry keyword in Ruby exception handling?

14.
What does the ensure keyword do in Ruby exception handling?

15.
What happens if an exception is raised within an ensure block in Ruby?

18.
What is the purpose of the ensure keyword in Ruby exception handling?

19.
What is the purpose of the retry keyword in Ruby?

20.
What is the purpose of the else keyword in Ruby exception handling?