Answer:
Product
Step-by-step explanation:
Product concept is based on general behavior of consumer. According to this concept consumers prefer product which has the best features, quality and performance given the price of product. Product concept is one of the important marketing strategies in order to match the expectation and demand of customers. Product concept facilities in giving identity to the product in relation to other similar product in the market. This concepts consistently asses the needs of consumer by using research and survey of market and consumer. Based on it features of products are modified to make product better.
Since this problem statement is discussing about desirable attributes of products and improvement in product it pertains t product concept as defined above.