Caveat emptor is an example of common law that a: was passed by congress within the last decade. b: is part of english law adopted in this country and derived from previous court decisions and customs. c: was mandated by the supreme court in common services v u. s. d: must be renewed annually

B: is part of English law adopted in this country and derived from previous court decisions and customs.

Explanation:

Caveat emptor is a latin phrase that is used to express that the customer has to check the product before buying it, being him the one that decides to buy the product and therefore he can´t complain about the quality/state of the product once is payed. It was a common law and common practice in old English and it was passed down to the United States.