## **Core Concept**
The question tests knowledge on the types of colonic polyps and their potential for malignant transformation. Colonic polyps are growths on the inner lining of the colon or rectum and can be classified into different types, including adenomatous (or adenoma), hyperplastic, and serrated polyps. The risk of malignant change varies among these types.

## **Why the Correct Answer is Right**
Adenomatous polyps, also known as adenomas, are neoplastic polyps that have the potential to progress to colorectal cancer through the adenoma-carcinoma sequence. This sequence involves the accumulation of genetic mutations leading to the transformation of normal epithelium into invasive cancer. The risk of malignant transformation in adenomatous polyps is well documented and is the basis for screening and removal of these polyps to prevent colorectal cancer.

## **Why Each Wrong Option is Incorrect**
- **Option A:** Hyperplastic polyps are generally considered to have very low or no potential for malignant transformation. They are usually small, sessile, and found in the distal colon and rectum.
- **Option B:** Serrated polyps, including sessile serrated adenomas (SSAs) and traditional serrated adenomas (TSAs), do have the potential for malignant transformation, but the risk is considered lower than that of adenomatous polyps. However, their detection and removal are still crucial because of their potential to progress to cancer.
- **Option D:** Inflammatory polyps are not typically considered precancerous lesions but rather a response to inflammation in the colon.

## **Clinical Pearl / High-Yield Fact**
A key clinical pearl is that the adenoma-carcinoma sequence is a well-established pathway for the development of colorectal cancer, and removing adenomatous polyps can prevent colorectal cancer. The risk of malignant transformation in adenomas is related to their size, histology (villous > tubulovillous > tubular), and degree of dysplasia.

## **Correct Answer:** . Tubulovillous adenoma.