Which combination best describes the stomach's main school-level digestive roles?
Storing and churning food while beginning substantial protein digestion✓Правильный ответ
Producing bile and absorbing every nutrient
Performing only mechanical digestion with no chemical action
Compacting undigested material and producing urine
Объяснение
The stomach temporarily stores food, churns it, and combines it with acid and enzymes that begin substantial protein digestion. Bile is produced by the liver, so bile production cannot be assigned to the stomach.