What's the difference between a brand-name and a generic product apex?

The difference between the brand name and generic description is that a brand name is originally discovered or have been developed by a particular company by which in order for other market to sell their product, their approval is needed. Whereas generic description is defined as someone who copies or made use of what the original or the brand name has used to deliver the same product that the original or brand named company has provided for its consumers.

a.   is the correct choice.

good luck. : )