Concept:The present perfect continuous tense describes an action that began in the past and is still continuing in the present.
Explanation:The sentence refers to an action that started ten years ago and is still happening now.
The phrase "for the past ten years" signals a duration that continues up to the present moment.
Option D, "has been living," uses the present perfect continuous tense, which correctly expresses this ongoing situation.
Option A, "is living," is the present continuous tense and only describes an action happening at the moment of speaking, not over a ten-year period.
Option B, "lived," is the past simple tense, which indicates that the action is completed and no longer occurs.
Option C, "will lived," is grammatically incorrect because "will" must be followed by the base form "live," not the past form "lived."
Thus, only option D fits both the tense requirement and the meaning of the sentence.
Answer:D. has been living