What is the maximum duration of a single period in a standard soccer match, excluding stoppage time?

In a standard soccer match, each half is played for a duration of 45 minutes, which is the maximum duration of a single period, excluding stoppage time. This was established by the Laws of the Game, which govern soccer worldwide.

While the total duration of a match is 90 minutes (90 minutes of playing time divided into two halves), the actual length of each half remains firmly at 45 minutes. Stoppage time is added at the discretion of the referee to account for interruptions in play, such as injuries or substitutions, but does not affect the base duration of each half.

The other options are either shorter than or greater than the standard duration of a half in a soccer match. Therefore, the correct answer accurately reflects the established duration within the regulations of the game.