Answer:
A. a sole proprietorship.
Explanation:
A sole proprietorship -
It is the type of industry , which is operated by a single individual and there is no legal difference between the business entity and the owner , is referred to as a sole proprietorship.
It is also referred as sole trader or individual entrepreneurship .
The sole trader , even employees certain people for his or her work .
Hence , the correct option form the given options is A. a sole proprietorship.