In Ruby, what is a closure?

A. A chunk of code that can be passed to methods as an argument B. A data structure for storing multiple values C. A special type of object that holds code to be executed D. A method that can be invoked with different arguments

A. By using the keyword block followed by square brackets [] B. By using the keyword block followed by parentheses () C. By defining a method with the keyword block D. By enclosing code within curly braces {}

A. A method that takes no arguments B. A predefined set of instructions C. A block that has been converted into an object D. A data structure for storing key-value pairs

A. By using the create_proc function B. Using the Proc.new method or the -> (stabby lambda) syntax C. By invoking the proc keyword followed by parentheses () D. None of the above