Which of the following was one technique employed by Paleolithic artists at the Great Hall of the Bulls at Lascaux to create the clear lines of the animals’ forms? - Using leather cut into shapes and soaked in pigment to print forms onto the wall - Using pens made from hollow animal bones filled with pigment to draw precise outlines - Using fingers dipped in fat from oil lamps to create wax contour lines - Using hands as stencils while blowing pigments to spray a surface