Answer:
b. price and quality.
Step-by-step explanation:
Most attributes and benefits in many product categories can be whittled down to price and quality.
This ultimately implies that, the two fundamental factors to consider when designing a product is its price and quality. The price of a product can be defined as the monetary value or amount of money which must be paid by a customer for the acquisition of such products. The relationship between demand and supply of goods (products) affects or influences the price of a product; if the supply of a product is short, its price would rise and vice-versa.
The quality of a product is subjective, it is a measure of excellence and being free from any defect or deficiency when producing and supplying products that meet the needs or demands of customers.