The robots operate on their own; no external control is present in the standard platform league.
which of the following choices best identifies the underlined verb?
auxiliary
linking
action
collective

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...

is it multiple

uncanny would be like unlucky or disaster. you can look for more in the dictionary or if you have text book then turn to a. 17 but it's different with textbooks.