Final answer:
The introduction of the no-drip spout on containers of liquid laundry detergent is an example of product modification.
Step-by-step explanation:
The correct answer is b) Product modification. Procter & Gamble's introduction of the no-drip spout on containers of liquid laundry detergent is an example of product modification. Product modification refers to making changes to an existing product to improve its performance, features, or design.
In this case, the introduction of the no-drip spout is a modification made to the container of the liquid laundry detergent to make it more convenient and user-friendly for consumers. It enhances the product by reducing waste and mess during pouring.
By adding this feature, Procter & Gamble aims to differentiate their product from competitors and attract more customers by offering a unique and improved packaging solution for their liquid laundry detergent.