Final answer:
In a quinceañera celebration, the godmother traditionally places the tiara on the quinceañera's head, symbolizing her transition from childhood to adulthood.
Step-by-step explanation:
The tradition of the quinceañera is a rite of passage for girls in Latin American cultures, marking the transition from childhood to womanhood on their 15th birthday. During the celebration, a specific ritual involves the placing of a tiara on the quinceañera's head. This act symbolizes the young girl's transition and her new responsibilities as a young adult. The person traditionally responsible for this is the godmother (madrina), making the correct answer C) The godmother.