Which of the following is NOT listed as a problem with 3D printing?

• A. Market volatility
• B. Cost
• C. Quality concern
• D. Lack of skills

Answer: (A)

The question tests your ability to spot which issues are commonly faced when adopting or using 3D printing. Market volatility isn’t a problem tied to the technology itself—it's a broader business risk that can affect many activities, not something inherent to 3D printing. In contrast, cost, quality concerns, and lack of skills are typical hurdles: costs can be high for equipment, materials, and maintenance; quality can be variable due to limitations in resolution, tolerances, and post-processing needs; and lack of skills reflects the need for design for additive manufacturing, software competence, and printer operation know-how. So market volatility isn’t listed as a 3D printing problem, making it the correct choice.