Final answer:
While the question about Levi's targeting issues with a specific age group is not explicitly mentioned, it is probable that they struggled with younger demographics, such as those under age 18 or ages 18-24, during the time of their factory closures and market shifts.
Step-by-step explanation:
The question does not explicitly mention which age group Levi's had the most trouble targeting. However, considering the context of the company's history, especially during the period of factory closures from the 1980s to 2003, one could infer that Levi's may have faced challenges in appealing to younger demographics who increasingly favored newer and trendier fashion brands. In this scenario, the company would need to adapt its marketing strategies to appeal to either the under age 18 group or the ages 18-24 demographic, which are typically the trendsetters in fashion.
It is important to note that competitive strategies, shifting market preferences, and the broader economic context—such as the rise of globalization, which could have led to moving production overseas—would have influenced Levi's ability to target specific age groups effectively.