The best definition of “supremacy” from those options is “highest authority.”

Core meaning

  • In standard English, “supremacy” means the state of being superior to all others in authority, power, or status.
  • That idea is closest to having the highest authority in a system or hierarchy, not necessarily unlimited or perfect power.

Why not the other options?

  • Limitless power : Supremacy can exist even when power has limits (for example, top court in a country still follows a constitution), so “limitless power” is too extreme.
  • Superior judgment : This is about better decision-making ability, not holding the top position in power or status.
  • Greater aptitude : Refers to higher skill or talent, which is narrower than the broad idea of domination or highest rank implied by “supremacy.”

So, among “highest authority, limitless power, superior judgment, greater aptitude,” the correct choice is highest authority.

Information gathered from public forums or data available on the internet and portrayed here.