Final answer:
According to Bohr's atomic model, an electron should be in a discrete orbit with specific allowable energies; without the figure, it's impossible to determine which letter(s) represent where it should be. Bohr's model indicates quantized electron shells, each with a specific electron capacity.
Step-by-step explanation:
According to Bohr's atomic model, an electron should be in a place that corresponds to discrete orbits or electron shells around the nucleus. These orbits or energy levels, denoted by the symbol "n", have specific allowable energies. Without a visual figure provided, it's difficult to precisely indicate which letter(s) represent a place where an electron should be. However, Bohr's model suggests that electrons reside in these quantized orbitals with each principal shell having a specific capacity for electrons (2 for the s orbital, 6 for the p orbitals, 10 for the d orbitals, and 14 for the f orbitals). In conclusion, depending on the principal shell being considered (1n, 2n, 3n, or 4n), the correct letter(s) indicating where an electron would be found should align with Bohr's theory that dictates the capacity for each type of orbital within the shells. For instance, the 2n shell can hold a maximum of 8 electrons, 2 in the s subshell and 6 in the p subshell.