Answer:
Nikki should choose a B) Sole Proprietorship
Step-by-step explanation:
The least expensive form of ownership for Nikki will be a sole proprietorship. This requires the least amount of admin work and is also the least cost intensive. Establishing a partnership will reduce her cost, but will dilute her ownership and also split her income. And also doesn't give her any form of limited liability either. Under a LLC she will incur registration costs as well as an annual fee, excluding the admin process and incorporation agreements.
Thus it is recommended that she chooses the sole proprietorship option as it will be the easiest and least costly. She can simply conduct business in her own name and will be taxed in her own name. There is no need to register a LLC and incur those costs.