The correct answer is c) dumbbell shaped.
2p orbitals are characterized by their unique shape that resembles a dumbbell, which consists of two lobes that extend in opposite directions from the nucleus of the atom. This shape is indicative of the probability distribution of finding an electron in these orbitals. Unlike 1s orbitals that are spherical (option d), 2p orbitals have a more complex structure that caters to the principles of quantum mechanics.
Furthermore, the option of elliptical (a) and tetrahedral (b) do not accurately describe the shape of 2p orbitals. While tetrahedral arrangements are relevant in discussing certain molecular geometries, they do not apply to the individual shape of the orbitals themselves. In conclusion, the dumbbell shape of the 2p electrons plays a crucial role in understanding the chemical properties and bonding behavior of elements that possess these orbitals.