Answer:
Linking
Explanation:
The underlined verb in the given sentence is is. Is is a form of the verb to be, the most common linking verb. Linking verbs don't express action but connect the subject to additional information about the same subject. Common examples of linking verbs are all forms of the verb to be, all sense verbs (e.g. to look, to seem, to taste, to feel, to smell, to sound), become... If we focus on the given example, we can see that the verb is doesn't describe an action, but connects the subject to information about it: No external control (subject) is present...
