Symbol "l" denotes orbital quantum number which describes the shape of the orbital. From the given choices, those are magnetic quantum numbers which denotes the number of orbitals which is often a range of values from negative to positive. 2l + 1 is the formula to know the number of orbitals. l = n -1, where n is principal quantum number. Therefore l = 2, MI = (-2, -1, 0, 1, 2) or 5 orbitals.
