Which Ruby tool is commonly used for automated testing to ensure code quality and reliability?

A. Kebab case (e.g., my-method) B. Snake case (e.g., my_method) C. Pascal case (e.g., MyMethod) D. None of the above

A. Using the syntax B. Using the # syntax C. Using the multiline comment syntax (=begin and =end) D. Using the // syntax

A. rbenv B. asdf C. chruby D. RVM (Ruby Version Manager)

A. Two spaces B. Four spaces C. Tabs D. Mixed spaces and tabs