Answer:
C. Improvements and revisions of existing products.
Step-by-step explanation:
The new and improved product may have significantly or slightly changed. Most products fit into the revision or improvement category.
Product improvements can be quite substantial or quite minor.
There are also benefits of a product been improved which could range from:
1). Match or outperform competition.
2). Meet changing consumer needs.
3). Leverage improvements in materials or manufacturing technology.
4). Provide variety etc.
An instance can be seen for a food product one of the ingredients may be changed to enhance the taste. Or the packaging may be changed to make it easier to open or to protect the product better.