Most professional organizations in the accessory design field are defined by: ОА.
the region of the United States where the accessories are popular.
OB.
those that work with minerals and those that do not.
C.
how long one has been in the accessory design business.
OD
the type of accessory made.

the type of accessory made

Explanation:

Accessories, are hard to hard produce. This difficulties exist in product that relied a lot on its artistic sense to determine their value.

Because of this, a lot of professional organizations in the accessory designed field relied a lot on brand awareness of the consumers to increase the value of their product in the market.

By focusing on one specific type of accessory, a company can associate the name of their brand with that specific type of items. This will create a niche segmentation in the consumers' head that make them remember the company every time they felt that they're seeking for that one specific type of accessory.

hello the answer is d

answer target market;