The correct answer to this open question is the following.
Anthropologist Victor Turner identified three primary stages in all rites of passage. In many cultures, the first menstruation in women is seen as a powerful marker of womanhood and is frequently marked by ritual. In some cases, the young woman is separated from the larger social cohort, left in a state of isolation that may provide a time for reflection. According to Victor Turner, this second stage is referred to as the liminal period.
In the perspective of Turner, rites of passage include three stages: separation, a liminal period, and reaggregation. During the rite of passage, the person that is under the liminal period is structural invisible because the individual is between social classification, that is why the term liminal is used. During this process, the person learns to see life in a new way and understand it with new meanings.
