I am pretty sure that it is A. Definition and Example.
It is giving an example in time and telling what happens in that amount of time. It also tells of future expectations when at that point in time. Hope I helped! Tell me if you get it right :)
Answer:
He changed the date of gifts-giving from December 6 to December 24, Christmas eve.
Explanation:
The Catholics chose December 6 as St. Nicholas Day. That day was meant for the veneration of the saints as well as the giving of gifts. To eliminate the act of venerating saints and draw more attention to Christ, Martin Luther changed the date of gifts-giving from December 6 to Christmas Eve. A young child was used to depict Christ or an angel, who brought gifts for the children.
The Christkind dropped gifts under the Christmas tree after which, the children can pick it. Today, the Santa Claus plays this role in some climes.
Riordan absolutely loves making allusions to ancient mythology. In the Lightning Thief for example, when fighting Medusa, Percy avoids looking at her by using a garden sphere. This is an allusion to the myths, when Perseus avoided looking at Medusa by using his own shield like a mirror. That's a simple example. Let me know if you need more.
