Service sector dominance indicates economic development

Steps:

• Identify that developed countries shift employment from primary (agriculture) to secondary (manufacturing) and especially tertiary (services) sectors.
• Compare service sector percentages: A (55%), B (30%), C and D (20%).
• Note primary sector decreases in developed nations, lowest in A (10%).
• Select country with highest services and lowest primary as most developed.

Why A is correct:

• High service employment (55%) aligns with stages of economic growth theory, where advanced economies rely on knowledge-based services over agriculture.

Why the others are wrong:

• B: Moderate services (30%) and higher primary (30%) indicate transitional developing economy.
• C: Low services (20%) and high primary (40%) reflect agrarian-based less developed status.
• D: Identical to C, showing underdeveloped economy with heavy reliance on primary sector.

Final answer: A