which of the following is the best answer to this question?

oneesanno tanjiyoubi wa itsudesuka?
1. aneno tanjiyoubi wa jiyuugonichi ichigatsu desu.
2. ane wa tanjiyoubi no jiyuugonichi ichigatsu desu.

1 answer

The best answer to the question "oneesanno tanjiyoubi wa itsudesuka?" would be option 2: "ane wa tanjiyoubi no jiyuugonichi ichigatsu desu." This answer indicates that the older sister's birthday is on January 15th.