Answer:
4. in the same orbital
Step-by-step explanation:
There are four sublevel s, p, d, and f. There can be two electrons maximum in one orbital and the p sublevel has 3 orbitals, so it can carry six electrons maximum (two in each orbital).
So, If an atom has three electrons in a p sublevel, all three electrons will be present in the p sublevel as it can hold maximum of 6 electrons.
Hence, the correct answer is "4. in the same orbital ".