**Core Concept**
Digastric muscles are a type of skeletal muscle with two distinct bellies (anterior and posterior) connected by an intermediate tendon. They play a crucial role in the movement and stabilization of the hyoid bone and mandible. The anatomy of digastric muscles is unique, with two distinct parts that work together to facilitate specific movements.

**Why the Correct Answer is Right**
The digastric muscles are involved in the depression of the mandible, specifically during activities such as yawning and swallowing. The anterior belly attaches to the mandible, while the posterior belly attaches to the mastoid notch of the temporal bone. The intermediate tendon connects the two bellies and plays a critical role in transmitting forces between them. The digastric muscles work in conjunction with other muscles of mastication to facilitate complex movements of the mandible.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect as digastric muscles are indeed involved in the movement of the hyoid bone and mandible, but their primary function is not related to the movement of the eye.
**Option B:** This option is incorrect as digastric muscles are not involved in the movement of the tongue; that function is primarily associated with extrinsic and intrinsic muscles of the tongue.
**Option C:** This option is incorrect as digastric muscles are not involved in the movement of the larynx; that function is primarily associated with intrinsic and extrinsic muscles of the larynx.

**Clinical Pearl / High-Yield Fact**
The digastric muscles are unique in that they are the only muscles in the body with two distinct bellies connected by an intermediate tendon. This anatomy allows for a range of movements, including depression of the mandible and stabilization of the hyoid bone.

**Correct Answer: D**