Final answer:
Wilhelm Wundt is recognized as 'the person who made this cellular study of mental life possible' due to his work in establishing the first psychological laboratory and his method of introspection.
Step-by-step explanation:
The individual recognized as "the person who made this cellular study of mental life possible" is Wilhelm Wundt. Wundt is often credited as the father of modern psychology and established the first laboratory dedicated to psychological research in Germany. His approach to psychology was rooted in the study of conscious experience and he utilized introspection to observe mental processes, making significant advances in the field. On the other hand, the person who proposed observational learning is Albert Bandura. Ivan Pavlov, associated with classical conditioning, and B.F. Skinner, known for operant conditioning, were also pivotal in the development of behavioral psychology, with their work contributing to the understanding of behavior and learning. Each of these figures played a crucial role in the advancement of psychology as a science.