Salesforce JavaScript Developer Practice Exam

The output of the code is determined by what the `typeof` operator returns when applied to the `Animal` class. In JavaScript, a class is essentially a special type of function. Even though classes provide a clearer and more structured way to create objects and manage inheritance, they still function under the hood as constructor functions.

When the `typeof` operator is used on the `Animal` class, it actually identifies the class as a function. This is consistent with the foundational behavior in JavaScript, where a class declaration creates a constructor function that can be instantiated to create objects. Therefore, the expected output in this case is "function".

While "object" might seem plausible within the context of instances created from the class, it does not apply to the class definition itself. The output will not be "undefined" as the class is properly defined and recognized by JavaScript. Lastly, "class" is not a return value of the `typeof` operator in this context, as it evaluates the type of the class structure, which is categorized as a function.