Question: Which of the following describes a fixed ratio schedule of reinforcement for a hungry rat in an operant conditioning cage? Need Assignment Help? Question options: Having the change to earn a pellet after pressing the bar 8 times since the previous bar-press. Having the chance to earn a pellet after 28 seconds have passed since the previous bar-press. Continuous reinforcement Earning a food pellet every time the rat presses a bar. Earning a food pellet after a random or unpredictable amount of time has passed.