It keeps saying You need assign the return value of the 'greeting' function to 'result' but i have assigned it that?

It seems you are trying to return a string in that return type. Anything in double quotes "" is a string. You also tried to interpolate the name using a string as the greeting. Here is the code that is the result of your task.

 func greeting(person: String) -> (greeting: String, language: String) {
   // These are strings, no need to redeclare them in the return type.
    let language = "English"
    let greeting = "Hello \(person)"

   // Simply return both strings in a tuple as stated above with the ( -> ) arrow to return (String, String)
    return (language, greeting)
}    

Remember that you are returning a tuple of 2 elements. A constant called 'language' and another constant called 'greeting' and you enclose it in parantheses after the return.

since the return type is a tuple, in your function you must also return a tuple. Interpolation is not needed either.

You've specified the return type of the function as a tuple, as seen in your function:

-> (greeting:String, language: String)

If you're not familiar with tuples, I suggest you read the Apple Swift Documentation. The provided link with take you directly to the tuple reference part of the documentation: Tuples