Chanae bakes a cake for Brandon’s birthday. She pours a cup…

Chanae bakes a cake for Brandon’s birthday. She pours a cup of milk over the cake mix in a mixing bowl (FR-1).  This results in the sight of a milky mix. Second, she cracks 2 eggs over the mix (FR-2). This results in the sight of eggs in the mix. Third, she stirs the mix about 30 times (VR-30). This results in the sight of a smooth batter. Fourth, she pours the batter into an oven pan (FR-1) and places that pan in the oven (FR-1). This sequence of events indicates Chanae’s baking a cake behavior is on what kind of complex schedule of reinforcement?