Answer:
Based on reading the passage, an unenumerated right is a right considered implicit, natural and inherent to man. Therefore, there is no need to write it in a constitution or a law, or it arises as a direct consequence of the rights that are legally stated.
For example, as arises from the ruling in Griswold v. Connecticut, the marital privacy right, which arises from the marriage institute itself as well as from the generic right to privacy. In other words, the right to marital privacy is not explicitly stated, but derives from rights that indeed are.
In short, certain rights do not need to be introduced into laws, but are evident in the face of a correct interpretation of the Constitution and the laws that complement it.