Explanation:

Here’s the thing—food goes through several stops in your digestive system, but where is digestion actually finished? Let’s break it down:

- Mouth: This is where it all starts. Enzymes in your saliva begin breaking down carbs. But the work here is just kicking off, not wrapping up.

- Stomach: The stomach takes on proteins, churning them with acid and enzymes. Still, this stage is partial—digestion isn’t done yet.

- Small intestine (Option 1): This is the main event. Enzymes from the pancreas and bile from the liver get involved. Here, carbs, proteins, and fats are fully broken down so the body can absorb nutrients. So, this is where digestion gets completed.

- Large intestine: By the time food hits the large intestine, its nutrients are already absorbed. The focus here is on absorbing water and forming waste—not digesting.