@@ -1,13 +1,21 @@
 // Predict and explain first...
-//  =============> write your prediction here
+// Prediction: I predict that the code will produce an error because
+// str is already declared as a function parameter and is declared
+// again with let.
 
 // call the function capitalise with a string input
 // interpret the error message and figure out why an error is occurring
 
 function capitalise(str) {
-  let str = `${str[0].toUpperCase()}${str.slice(1)}`;
-  return str;
+  return `${str[0].toUpperCase()}${str.slice(1)}`;
 }
 
-// =============> write your explanation here
-// =============> write your new code here
+// Explanation: The parameter str is already declared when the
+// function is created. We cannot declare another variable called
+// str with let in the same scope.
+
+// New code:
+// The function now uses the existing str parameter and returns
+// the capitalised string.
+
+console.log(capitalise("hello"));