## Core Concept
The glycemic index (GI) is a measure of how quickly foods raise blood sugar levels. Foods are ranked on a scale from 0 to 100, with pure glucose given a value of 100. Low GI foods have a value of 55 or less and are digested and absorbed slowly, causing a gradual rise in blood sugar levels.

## Why the Correct Answer is Right
The correct answer, , is known for having a low glycemic index. This is because it contains a high amount of fiber and healthy fats that slow down the digestion and absorption of carbohydrates, leading to a more gradual increase in blood glucose levels.

## Why Each Wrong Option is Incorrect
* **Option A:** is typically high on the glycemic index because it is quickly digested and absorbed, causing a rapid spike in blood glucose levels.
* **Option B:** has a moderate to high glycemic index due to its carbohydrate content that is rapidly digested.
* **Option D:** is also high on the glycemic index as it causes a quick increase in blood sugar levels due to its rapid digestion.

## Clinical Pearl / High-Yield Fact
A key point to remember is that low glycemic index foods are beneficial for individuals with diabetes or those trying to manage their blood sugar levels. These foods help in preventing sudden spikes in blood glucose, thereby aiding in better glucose control.

## Correct Answer: .