Final answer:
The argument for global sourcing in Echo Corp.'s scenario is best supported by the potential for improved production efficiency and cost savings through global outsourcing and offshoring. Option B, which discusses reengineering business processes for efficiency, aligns most closely with this rationale.
Step-by-step explanation:
When considering the scenario of Echo Corp., a Boston-based manufacturer of high-quality audio components facing competitive pressures, the most supportive argument for global sourcing is option B: "Studies show that by reconfiguring their value-chain systems or reengineering their business processes, companies can substantially improve their production efficiency and resource utilization." This statement directly connects to the possibility that global sourcing can help a company like Echo Corp. become more competitive by enhancing production efficiency and cutting costs without sacrificing quality. Outsourcing and offshoring to countries with cheaper labor and streamlined production can lead to significant cost savings and allow firms to maintain or even improve the quality of their products through global efficiency.
In contrast, the other options do not directly support the argument for global sourcing. Option A is irrelevant to global sourcing since it does not address the issue of cost competitiveness. Option C deals with a competitor's strategy that is not relevant to sourcing decisions, and option D about employee turnover stability is unrelated to sourcing strategies aimed at improving competitiveness.