To solve this question, the user needs to be familiar with the elements of WSDL and understand what each element represents.

The correct answer is: D. Destination is not an element in WSDL.

Explanation for each option:

A. Types: This is an element of WSDL. It defines the data types used in the messages exchanged between the client and server.

B. Port Type: This is an element of WSDL. It defines a set of abstract operations supported by one or more endpoints.

C. Service: This is an element of WSDL. It defines a collection of related endpoints.

D. Destination: This is not an element of WSDL. It is not related to the web service description language.

Therefore, the correct answer is D. destination.