Answer: B. Janice will be taking dancing lessons for the last time.
A verb that comes before a lexical verb is called a helping verb. In other words, they assist the main verb in a sentence by extending its meaning. They complete the structure of the sentence by adding more detail to the main verb. “Janice will be taking dancing lessons for the last time” has “will be” as its helping verb. In this sentence, the helping verb forms a progressive tense in the sentence.