Option A) interregnum is correct as it means a period when normal government is suspended, especially between successive reigns or regimes and best suits the given sentence. The other options are wrong as gap, anachronism, and stasis mean a break or hole in an object or between two objects, a thing belonging or appropriate to a period other than that in which it exists, especially a thing that is conspicuously old-fashioned, and a period or state of inactivity or equilibrium respectively. The correct answer is A) interregnum.