A stacked bar chart illustrates the distribution of IT infrastructure spending for a global corporation across three regions (North America, Europe, Asia) for the years 2018, 2019, and 2020. Each bar represents a year, segmented by region. The total height of each bar represents the total spending for that year. If the corporation's overall IT spending increased by 10% from 2018 to 2019, and by 15% from 2019 to 2020, which region consistently maintained the largest *proportion* of total spending across all three years?
✓ Correct Answer: Option A
The question asks for the largest *proportion*. By visually inspecting the stacked bar chart, one can determine which segment (region) occupies the largest portion of each year's total bar. Assuming North America is consistently the largest segment visually, it maintained the largest proportion.