**Core Concept**
The "saccade" refers to a rapid, simultaneous movement of both eyes in the same direction between two or more phases of fixation in the visual field. This phenomenon is essential for smooth visual processing and is a fundamental aspect of oculomotor control.

**Why the Correct Answer is Right**
Saccades occur due to the coordinated effort of multiple brain regions, including the frontal eye fields, the superior colliculus, and the pons. The superior colliculus plays a crucial role in initiating saccades by sending signals to the brainstem, which in turn activates the extraocular muscles responsible for eye movement. The integration of visual information and the programming of saccades involve a network of interconnected neurons in the brain, facilitating the efficient processing of visual stimuli.

**Why Each Wrong Option is Incorrect**
* **Option A:** This option might be incorrect as it is a vague description and does not specifically relate to the phenomenon of saccades.
* **Option B:** This option might be incorrect as it refers to a type of eye movement, but it is not the most accurate description of a saccade.
* **Option D:** This option might be incorrect as it describes a different type of eye movement, such as a pursuit movement, which is distinct from a saccade.

**Clinical Pearl / High-Yield Fact**
Lesions in the frontal eye fields or the superior colliculus can lead to impaired saccadic eye movements, resulting in difficulties with visual scanning and attention. This phenomenon is often observed in patients with neurological disorders such as hemispatial neglect.

**Correct Answer:** C. A rapid, simultaneous movement of both eyes in the same direction between two or more phases of fixation in the visual field.