Final answer:
Early humans living in the interior of a continent would least likely have fish and shellfish in their diets, relying more on local plants and land animals due to the lack of proximity to coastal regions where marine resources are abundant.
Step-by-step explanation:
If a group of early humans lived in the interior of a continent, they would least likely have fish and shellfish at meal time. Inland groups would rely more on local plants, the meat of small animals, and potentially the meat of large animals if they had access to them. On the other hand, coastal groups would have had easier access to marine resources such as fish and shellfish, which would not be readily available to their inland counterparts.
The diets of these early humans greatly depended on their local geography and environment. Those in lush, warm environments had access to a variety of plants and animals. In icier environments, their diets depended more on animal protein, including meat from hunting. Fishing strategies would not usually be applicable far from coastal regions, so interior groups would generally lack fish and shellfish in their diets.