Tool

''“In... Intended tool?” Solis asked.''

''“Yes, you know, your intended profession. What were you going to do? I see you’ve not tried to pick the lock yet, so it couldn’t have been locksmithing. You did not attack us with a sword, so it must not be the blade, like Gerrard. But, all humans are proficient with a particular tool. What apprenticeship were you planning on choosing?”''

Tools are used by humans and are unusable by beasts. A "chosen tool" is another way of saying "one's chosen profession" for the humans of Cainin. But, the tool also can symbolize the profession. The chosen tool of a fighter is the blade; the chosen tool of a Weaver is a staff.