A. She will have been studying.
B. She is studying.
C. She was studying.
D. She has studied.
Answer: She will have been studying.
A. She will have been studying.
B. She is studying.
C. She was studying.
D. She has studied.
Answer: She will have been studying.
Additional Information: The future perfect continuous tense describes an ongoing action that will continue up until a specific future time.