Final answer:
The subject of this question is Business. Karen is studying the number, types, and availability of wholesalers and retailers in China as part of her analysis for selling her company's products there. This pertains to the distribution structure of the country.
Step-by-step explanation:
The subject of this question is Business. Karen is studying the number, types, and availability of wholesalers and retailers in China as part of her analysis for selling her company's products there. This pertains to the distribution structure of the country, as she is assessing the channels through which her company's products can reach customers.