The correct answer is: B. were you born?
The sentence “Where have you been born?” is grammatically incorrect. The correct sentence should be “Where were you born?”
The verb “to be” is used to form the present perfect tense, which is used to talk about things that have happened in the past but have a connection to the present. In this case, the speaker is asking about the listener’s birthplace, which is something that happened in the past but has a connection to the present because it is part of the listener’s identity.
The verb “to be” is also used to form the past tense, which is used to talk about things that happened in the past and are not connected to the present. In this case, the speaker is asking about the listener’s birthplace, which is something that happened in the past but is not connected to the present because it is not something that the listener is currently doing.
The verb “to be” is conjugated in the past tense as “were.” Therefore, the correct sentence is “Where were you born?”