Hello :)
A linking verb is a verb that describes a subject, a linking verb connects a noun and a predicate.These verbs always link subjects to something that further describes the subject of the sentence.
A does not contain a linking verb, but it does contain a helping verb; "has". B does not contain a linking verb, but it does also contain a helping verb; "are" C doesn't contain a linking verb, but some might get this mixed up because is has the word have which is a linking verb, but in front of that word it says "could" indicating that it didn't happen. D does contain a linking verb "have been" this indicates that they've been feeling this way. <em>The hockey players</em> is the noun and<em> </em><em>anxious about the match is the </em>predicate.
So i'm inferring that the answer is D
