Final answer:
Frenched ribs are the small ribs taken from the primal breast.
Step-by-step explanation:
The small ribs taken from the primal breast are commonly known as "Denver ribs." These ribs are derived from the beef chuck primal, specifically the rib primal, which is closer to the shoulder. Denver ribs are renowned for their rich marbling, resulting in flavorful and tender meat when properly cooked.
While options like "rack" typically refer to ribs from the lamb or pork primal cuts, "frenched" implies a specific trimming style, and the term "hotel rack" may involve a culinary presentation, none of these precisely denote the small ribs taken from the beef primal breast, making "Denver ribs" the most accurate choice in this context.