The correct answer is D. Will be
Explanation:
In grammar, a linking verb is a type of verb that links or connect the subject or agent in the sentence to a noun or adjective in the predicate and through this relationship describes the subject or agent. Most common linking verbs include verbs such as be, look, seem or become that describe some state, condition or relationship that is not controlled by the subject, contrary to describing an action as in other types of verbs. Considering this, from the list provided the only linking verb is the verb to be in its future form or "will be" as this verb connects the subject "Jessica" to the adjective and noun "an excellent skier" and does not describe an action controlled by Jessica but rather a possible future condition or situation. Thus, the verb that completes the sentence with a linking verb is D. Will be.
