Final answer:
The statement is true, regarding the rules under the UCC for contracts for the sale of goods among merchants, where additional terms in an acceptance can become part of the contract unless they materially alter the original terms, the offer limits acceptance, or there's timely objection.
Step-by-step explanation:
The statement is true. In the context of the Uniform Commercial Code (UCC), which governs contracts for the sale of goods (SOG), a definite expression of acceptance can include additional terms and still operate as an acceptance. This general rule applies particularly between merchants, where such additional terms become part of the contract automatically unless: (i) the new terms materially alter the original offer, changing the parties' risk or the remedies available; (ii) the original offer expressly limits acceptance to the terms of the offer; or (iii) the offeror objects to the additional terms within a reasonable time after notice of them.