Final answer:
The best option for companies when marketing their products overseas is to modify them for different countries and regions, as it allows for tailoring to unique local preferences and requirements. Therefore, the correct option is D.
Step-by-step explanation:
When considering marketing products overseas, companies have a few options. Among the listed ones, the best option is (d) modifying products for different countries and regions. This approach allows companies to cater to local tastes, preferences, regulatory requirements, and cultural nuances, all of which can significantly increase the acceptability and success of products in foreign markets.
While options such as lobbying the World Trade Organization (WTO) for most favored nation status or developing domestic campaigns with standard messages may have their merits, they are either not directly related to how a product is marketed overseas in terms of product features or do not account for regional differences that can be critical in international marketing.