Final answer:
The universal appeal of blue jeans can be best accounted for by cultural diversity, economic factors, and fashion trends.
Step-by-step explanation:
The universal appeal of blue jeans can be best accounted for by cultural diversity, economic factors, and fashion trends. Blue jeans became popular in the 1960s among young cultural warriors and social activists as a symbol of nonconformity and rebellion. Additionally, jeans were adopted by a broader customer base due to their association with cowboy movies and the popularity of dude ranch vacations. Economic factors also played a role as jeans became more affordable and accessible to different socioeconomic groups. Finally, fashion trends and media influence, along with the desire for comfort and versatility, contributed to the universal appeal of blue jeans.