Juana tells Kino that

a
she sold the pearl to a pearl buyer.
b
the doctor stole the pearl.
c
the pearl is evil.

a

She sold the pearl to a pearl buyer.

Based on the given statements, Juana tells Kino three things:

a) She sold the pearl to a pearl buyer.
b) The doctor stole the pearl.
c) The pearl is evil.

These statements suggest that Juana sold the pearl to a buyer, but at some point, the doctor stole it. Additionally, Juana believes that the pearl is evil.

To determine the answer to this question, we can analyze the provided statements made by Juana.

Statement a: Juana tells Kino that she sold the pearl to a pearl buyer. This statement implies that Juana no longer possesses the pearl, as she claims to have sold it to a buyer. This suggests that the pearl is no longer in Juana's possession.

Statement b: Juana tells Kino that the doctor stole the pearl. This statement suggests that the doctor took the pearl without permission or knowledge from either Juana or Kino. If this statement is true, then it means the pearl is currently in the possession of the doctor.

Statement c: Juana tells Kino that the pearl is evil. This statement implies that Juana believes the pearl to possess some kind of negative or malevolent power. It does not provide any information about the location or current status of the pearl.

Based on these statements, it can be concluded that either the pearl has been sold to a pearl buyer according to Juana (statement a), or the pearl has been stolen by the doctor according to Juana (statement b). Without further information, it is not possible to definitively determine which of these two statements is true. Additionally, statement c regarding the pearl being evil does not provide any direct information about the current whereabouts of the pearl.