Final answer:
The Japanese company that manufactures an automobile in Tokyo and sells it exclusively in the United States would add to the GDP of the United States.
Step-by-step explanation:
The company that would add to the GDP of the United States is option b - a Japanese company that manufactures an automobile in Tokyo and sells it exclusively in the United States.
Gross Domestic Product (GDP) is the total monetary value of goods and services produced within a country's borders for a given year. In this scenario, the production and sale of the automobile in the United States contribute to the country's GDP.
Keywords: GDP, United States, automobile, manufacturing