Answer:
The terms materially alter the original contract, the original offer expressly required acceptance of its terms or the offeror objects to the new terms within a reasonable time.
Step-by-step explanation:
The company (Nature's Products, Inc.) has to specify very carefully what they want to include in their contracts such as clauses or additional terms, because if the do not do this, other companies can take advantage of certain loopholes in the contract to take an advantage.