**Core Concept:**
An avulsed tooth refers to a tooth that has been completely removed from its socket due to trauma or force. The tooth can be replanted if treated appropriately within a certain time frame to increase the chances of survival and successful reattachment.

**Why the Correct Answer is Right:**
The correct answer, D, is that the tooth should be stored in a suitable solution such as saline or the patient's saliva. This helps to maintain the viability of the tooth and the periodontal ligament cells, increasing the likelihood of successful replantation.

**Why Each Wrong Option is Incorrect:**
A) Option A suggests using fresh milk, which may lead to bacterial growth and tissue damage. B) Option B advocates for using water, which does not provide the necessary nutrients and protection for the tooth. C) Option C suggests using sterile water, which is similar to option B and does not provide adequate preservation of the tooth.

**Clinical Pearl:**
When treating an avulsed tooth, the key is to preserve the tooth's vitality and periodontal ligament cells. Using a suitable storage medium like saline or saliva increases the survival chances and ensures a higher probability of successful replantation.

**Correct Answer: D. Store the avulsed tooth in a suitable storage medium like saline or the patient's saliva.**