Answer:
The correct answer is had disappeared.
Step-by-step explanation:
Verbal phrases are those that contain verbals, as well as their modifiers. There are three kinds of verbal phrases: (1) gerunds, (2) infinitive, and (3) participial phrases.
Participial phrases, in particular, contain a participle, or verbal acting as an adjective. Either a present participle (ending in -ing) or a past participle (ending in -ed or -en).
Bearing in mind the explained above, it could be said that in the sentence provided: "The feet of the dead witch had disappeared entirely and nothing was left but the silver shoes" the phrase had disappeared corresponds to a verbal phrase, past participle verbal phrase specifically.