Explanation
Choice D is the best answer. According to the text, the cost of clothing production decreased with the advent of assembly lines, but the manufacturing and distribution stages were more affected than the brainstorming, sketching, and material selection stages. Then, it logically follows that the costs of the brainstorming, sketching, and material selection stages did not decrease as much as the costs of the manufacturing and distribution stages.
Choice A: The text does not discuss whether these assembly lines helped make anything more convenient. It only mentions their impact on the cost of production.
Choice B: The text does not discuss consumer preferences on clothing prices.
Choice C: This choice is not relevant to the reasoning in the text, which discusses a decrease in the cost of clothing production.
✨ Expert's Tip ✨
Identify the order in which the stages in clothing production are arranged: manufacturing and distribution come after brainstorming, sketching, and material selection.