Step 1: Understanding the Concept:
Early diffusion research often had a "pro-innovation bias," assuming that any new technology developed by scientists was automatically good and should be adopted by all farmers.
Step 2: Detailed Explanation:
In their influential book *Communication of Innovations* (1971), sociologists Everett Rogers and F. Floyd Shoemaker critically examined the limitations of traditional diffusion models.
They pointed out that not all innovations are beneficial for every individual in a social system.
Some innovations are inappropriate, economically unfeasible, or carry negative social/environmental consequences for certain groups of farmers.
Therefore, they explicitly warned that the diffusion and adoption of all innovations is not necessarily desirable.
Step 3: Final Answer:
The statement was pointed out by Rogers and Shoemaker (1971), corresponding to Option (C).