Final answer:
In 2008, Christie's auctioned a tracksuit from The Sopranos for $2,375, highlighting the intersection of television culture and athletic apparel.
Step-by-step explanation:
In 2008, Christie's auctioned one of the athletic outfits worn on "The Sopranos" for $2,375. The correct answer is c) Tracksuits. The show often depicted characters wearing tracksuits, which became somewhat iconic and associated with the series. Tracksuits are not just fashion statements but are also related to the performance apparel used in sports to minimize drag and enhance an athlete's performance, much like the technological advancements seen in other sports gear such as full bodysuits for Olympic swimmers and cyclists.