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In C# you declare a reference parameter by writing the ________ keyword before the parameter variable’s data type.

When a ________ method finishes, it returns a value to the statement that called it.

If a specific task is performed in several places in a program, a method can be written once to perform that task and then be executed any time it is needed.

Every method must have a nonempty parameter list.

Data values passed to a method when it is called are known as ________.

A parameter variable’s scope is the ________ in which the parameter variable is declared.

When an argument is ________, only a copy of the argument’s value is passed into the parameter variable.

________ are useful for returning more than one value from a method.

In a method header, the name is always followed by a set of parentheses.

When a ________ is provided for a parameter, it is possible to call the method without explicitly passing an argument into the parameter.