Scarcity stems from unlimited wants versus limited resources

Steps:

• Recall the economic definition: Scarcity occurs when resources are insufficient to satisfy all human desires.
• Identify the core elements: Wants are endless, but resources like time, money, and materials are finite.
• Evaluate options: Check which factor directly creates the imbalance leading to choices and trade-offs.
• Select the match: The option highlighting endless desires fits the cause of scarcity.

Why D is correct:

• Scarcity is defined in economics as the gap between unlimited human wants and limited resources, forcing prioritization and opportunity costs.

Why the others are wrong:

• A: High employment boosts production but doesn't address the wants-resources mismatch.
• B: High investment expands resources temporarily, yet wants remain unlimited.
• C: Unlimited resources would eliminate scarcity, not cause it.

Final answer: D