Hircus Outdoors typically uses four fully-qualified guides to lead a group of 20 adults in the wilderness, and it feels it would be a grave risk to use any fewer.
Hircus Outdoors typically uses four fully-qualified guides to lead a group of 20 adults in the wilderness, and it feels it would be a grave risk to use any less.
Hircus Outdoors typically uses four fully-qualified guides to lead a group of 20 adults in the wilderness, and it feels it would be a grave risk to use any fewer.
Hircus Outdoors typically uses four fully-qualified guides to lead a group of 20 adults in the wilderness, and it feels it would be a grave risk to use any less.
If we are talking about something countable, something for which we would ask "how many?" instead of "how much?", then we need to use "fewer."