The formulas were part of the performance to allow the audience a moment to breathe while the singer could think about the next part of the story. These formulas for different aspects of culture such as greeting guests, eating meals, etc.
The correct answer to this question is B
C- Indeed very unjustly
I just answered this question for someone els on here, so here you go,
I hope this helped.
The phrase during separate semesters helps reveal the meaning of the word concurrent which means at the same time.
