रचनावाद (Constructivism) पर आधारित 'खोज अधिगम' (Discovery Learning) मॉडल का प्रस्ताव किसने दिया था?

A teacher recognising diverse learning styles in her class is applying which of the following approaches?

Assertion (A): Skinner's Programmed Instruction is based on the principles of operant conditioning including immediate reinforcement and small steps. Reason (R): Programmed Instruction allows learners to progress at their own pace and receive immediate feedback on responses.