Answer: The linking verb in this sentence is "tastes".
Explanation: A linking verb is a type of verb that establishes a connection between the subject and the element that follows this verb, that is to say the subject complement, which adds extra information about the subject. In that way, a linking verb does not present an action. Moreover, verbs that make reference to the five senses are usually linking verbs. The linking verb in the sentence provided is "tastes", which refers to one of the senses and connects "this soup" to the subject complement ("very good").
