What is a flake in stone tool production?

A flake in stone tool production is defined as a thin piece of stone that has been removed from a larger piece, known as the core. This process is typically part of a technique called flintknapping, where strikes are made to chip off flakes from the core to create sharp edges for tools or other purposes. The characteristics of the flake, such as its shape and edge geometry, directly influence its potential use as a tool.

In this context, the other options do not accurately describe what a flake is. A tool made from a core refers to the finished products that can be created from core stones, but does not specifically indicate the flake itself. An imprint left on the core describes a potential marking or damage on the surface of the core, rather than the flake that is produced. Finally, a type of nodule used for decoration is unrelated to stone tool production, as it refers to a geological formation rather than to the chipped pieces of stone that are fundamental in making tools. Thus, B is the correct choice as it precisely defines what a flake represents in the context of stone tool production.