Final answer:
The spherically symmetrical orbitals are the d) s-orbitals, which have a spherical shape around the nucleus. P-orbitals are dum/bbell-shaped, and d-orbitals are complex four-lobed shapes.
Step-by-step explanation:
The orbitals that are spherically symmetrical are the s-orbitals. In electron configuration, the s-orbitals can be found in the s subshell and are characterized by a spherical shape surrounding the nucleus. Each energy level or principal quantum number (n) has one s orbital, and the shape is consistent regardless of the energy level.
On the other hand, p-orbitals are shaped like dum/bbells, and the d-orbitals have more complex shapes described as rosette or four-lobed. The f and g orbitals are even more complex in shape and are not spherically symmetrical.
Hence, the correct answer is Option D.