The correct answer is: B. Minimum in a period
The ionization potential of an atom is the amount of energy required to remove an electron from the atom. The ionization potential of a noble gas is the lowest in a period because noble gases have a full valence shell of electrons. This means that they are very stable and do not easily lose electrons.
Option A is incorrect because the ionization potential of a noble gas is not the maximum in a period. The ionization potential of a noble gas is the lowest in a period.
Option C is incorrect because the ionization potential of a noble gas is not the maximum or minimum in a period. The ionization potential of a noble gas is the lowest in a period.
Option D is incorrect because the ionization potential of a noble gas is not none of these. The ionization potential of a noble gas is the lowest in a period.