Final answer:
Arsenic (As) has the highest first ionization energy among the listed elements, as it is located furthest to the right and at the top in its periodic table group.
Step-by-step explanation:
The question asks us to predict which element has the highest first ionization energy out of As, Bi, Ge, Pb, Sb, or Sn. According to trends on the periodic table, ionization energy increases across a period (left to right) and up a group (bottom to top). Since As (Arsenic) is positioned furthest to the right and at the top among the given elements, we can infer that it has the highest first ionization energy.