A main reason to improve product quality is that doing so can achieve which of the following?

EXTENDING THE PRODUCT LIFE
DEEPENING THE PRODUCT MIX
LOWERING THE COST TO MAKE THE PRODUCT
CREATING PRODUCT LINE EXTENSIONS

All of the above. Improving product quality can help extend the product's life by increasing customer satisfaction and loyalty. It can also deepen the product mix by offering higher quality options or variations of the product. Additionally, improving product quality can help lower costs in the long run by reducing defects and improving efficiency in the production process. Lastly, it can create product line extensions by introducing new and improved versions or variations of the product.

THERE IS ONLY ONE ANSWER..... WHAT IS IT

The main reason to improve product quality is "extending the product life."