The Tense of the verb phrase in the given sentence is Future Progressive. Thus last option is correct.
Tense is the verb based method that indicates the time period about when did the speaker or the narrator performed the actions. The actions can be completed or about to be performed.
There are major three types of the tenses which are present, past and future. Apart from it, there are 12 tenses in total. One of the tense used in the given sentence is future continuous.
Future continuous tense refers to the form of the verb in which the continuity of the actions will take place in the near future. Thus last option is correct.
Learn more about Progressive Tenses here:
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