Final answer:
The three skills common to hunter-gatherers in the Paleolithic age were hunting, gathering, and tool-making.
Step-by-step explanation:
The three skills that were common to hunter-gatherers in the Paleolithic age were hunting, gathering, and tool-making.
Hunting involved tracking and capturing wild animals for food. Gathering involved collecting fruits, nuts, berries, and other plant resources for sustenance. Tool-making involved creating tools and implements, such as stone spearheads and axes, for hunting, cutting meat, and scraping animal skins.