Lactose intolerance symptoms typically arise when a greater amount of lactose is produced than...

Lactose intolerance occurs when the body does not produce enough lactase, the enzyme responsible for breaking down lactose, which is the sugar found in milk and dairy products. When an individual who is lactose intolerant consumes dairy, the lactose in the food enters the digestive system and can exceed the amount that the body can process due to insufficient lactase. This leads to various gastrointestinal symptoms such as bloating, gas, and diarrhea.

The correct answer emphasizes the relationship between the amount of lactose produced or present in the intake and the capacity of the body to process it through the action of lactase. Since people with lactose intolerance have a decreased capacity to adequately process lactose, when the amount of lactose consumed surpasses this capacity, symptoms will become evident. Thus, the correct answer highlights the critical point at which lactose intake becomes problematic for individuals who are lactose intolerant.