Final answer:
The only component of the marketing mix that changes with export selling is Price, as it is directly influenced by the foreign exchange rates and other associated international market factors.
Step-by-step explanation:
When firms market their products internationally, they must consider the foreign exchange rates which impact the final cost for the consumer in different markets. For example, if a U.S. company is exporting goods, the price of their products is influenced by the value of the U.S. dollar against the currency of the importing country. A product that costs $25,000 in the U.S. would have a different price in the UK based on the current exchange rate, which can be $1.30 per British pound or $1.50 per British pound, directly affecting how the product is priced in British pounds.
This variability in the exchange rate is why the Price is the primary component of the marketing mix affected by export selling. Furthermore, the competitiveness of product pricing is influenced by relative prices of goods in domestic and international markets, productivity levels, and changes in exchange rates affecting production costs.