The factor has a significant impact on a firearm's maximum projectile range is the altitude. Altitude<span> or </span>height<span> (sometimes known as </span>depth<span>) is defined based on the context in which it is used (aviation, geometry, geographical survey, sport, and many more). As a general definition, altitude is a distance measurement, usually in the vertical or "up" direction, between a reference </span>datum<span> and a point or object. </span>
The answer would be C, denomination.
Memorial Day and Veterans Day
Hope this helps =]