Which characteristic defines the vertical and horizontal field of view for the 17C?

The vertical and horizontal field of view for the 17C is defined as 10 degrees vertical and 8 degrees horizontal. This specification is crucial as it outlines the extent of the area that the user can see through the optical system without having to move their eyes or head significantly. Understanding this field of view is vital for accurate targeting and situational awareness when utilizing the 17C in various operational scenarios.

In contrast, the other options do not accurately define the field of view characteristic for the 17C. For instance, the first option regarding 18 degrees wide does not apply to the specific measurements of the 17C, while the lack of magnification mentioned in another option relates more to the device's operational mechanics rather than its field of view. The mention of a single illuminated dot focuses on the reticle design instead of the crucial aspect of the field of view dimension, which is essential for handling and aiming equipment effectively.