Final answer:
The Hegira is named after the event where Mohammed fled Medina, marking the starting point of the Muslim calendar.
Step-by-step explanation:
The statement is A) True. The Hegira refers to the event in 622 CE when Muhammad and his followers left Mecca and traveled to the city of Yathrib, which later became known as Medina. This event marked the starting point of the Islamic calendar. The significance of the Hegira is such that the Islamic lunar calendar counts 622 CE as its first year.