在这里显示的数据库表中，哪一列将是主键的最佳候选? In the database table shown here， which column would be the best candidate for a primary key?<img src="https://up.zaixiankaoshi.com/9638412/image/png/1678633203097.png" class="fr-fic fr-dib" data-hash="FioQAskhbZHM-u3i8St_J3gBx5hP" data-key="9638412/image/png/1678633203097.png">