Final answer:
Option (D), In joint ventures, multicultural teams are crucial for successful strategic planning, implementation, and production, providing diverse perspectives and fostering innovation.
Step-by-step explanation:
For the purposes of strategic planning, implementation, and production in joint ventures, multicultural teams are particularly important. Such teams bring together diverse perspectives and expertise, which can lead to innovative solutions and better decision-making. In contrast, an ethnocentric hiring strategy could limit this diversity and the potential benefits it brings.
Dual-career couples and rigid repatriation policies are components to consider in managing a multinational workforce but are not directly linked to the successful operational elements of a joint venture like multicultural teams are.