Answer:The large variety of yogurts under the Dunchen brand are collectively an example of a Product line.
Step-by-step explanation:
What Is a Product Line?
A product line refers to products from a single brand which all fall under the same company. Most companies have various products line which they name with different brand names so that they can be distinguished from each other.
Companies enhances their product line because it ensures them an increase in sales especially when customers are already use to their brand and trust it.
The marketing strategy for expanding product line relies on the fact that customers are more comfortable with buying the brand that they already familiar with.
For example the Dunchen Moo has various brand names of yoghurt, milk powders , flavoured whipped cream and other product under their brand and this represent their product line.