**Core Concept**
The question is testing the knowledge of the muscles involved in the movement of the tongue, specifically those responsible for protrusion and upward movement. The extrinsic and intrinsic muscles of the tongue work together to facilitate various movements such as protrusion, retraction, elevation, depression, and lateral movement.

**Why the Correct Answer is Right**
The correct answer is the Styloglossus muscle, which is one of the extrinsic muscles of the tongue. The Styloglossus muscle originates from the styloid process and the stylohyoid ligament and inserts into the lateral surface of the tongue. When it contracts, it helps to elevate the tongue, pulling it upwards and backwards, which facilitates protrusion. This movement is essential for speech, swallowing, and other oral functions.

**Why Each Wrong Option is Incorrect**
* **Option A:** Genioglossus muscle is primarily responsible for protruding the tongue and is not directly involved in upward movement. It is the primary muscle involved in protrusion.
* **Option B:** Hyoglossus muscle depresses and retracts the tongue, which is opposite to the action described in the question.
* **Option D:** Palatoglossus muscle elevates the tongue and helps in the formation of a bolus during swallowing, but it is not directly involved in protrusion.

**Clinical Pearl / High-Yield Fact**
The Styloglossus muscle is often overlooked in clinical practice, but it plays a crucial role in the movement of the tongue. Understanding the anatomy and function of this muscle is essential for diagnosing and managing conditions affecting the tongue, such as tongue protrusion or difficulty swallowing.

**Correct Answer:** C. Styloglossus muscle.