This question is missing the options. I've found the complete question online. It is as follows:
The ________ concept is aligned with the philosophy of continuous product improvement and the belief that customers will choose products that offer the most in quality, performance, and innovative features.
a. product
b. production
c. customer
d. marketing
e. promotion
Answer:
A. product.
Explanation:
In marketing, the product concept concerns the understanding that consumers prefer products with better features, quality, and performance. Marketers will, therefore, work to understand the product's dynamics in order to properly market it towards a certain niche - a specific group of consumers who are expected to buy the product. Consumers are believed to be willing to pay more for a product that truly satisfies their needs.