Step 1: Understanding the Concept:
In Everett Rogers' diffusion of innovations theory, communication channels are classified across two dimensions:
1. Personal vs. Impersonal: Personal involves face-to-face interaction, while Impesonal does not.
2. Localite vs. Cosmopolite: Localite channels originate within the local social system, while Cosmopolite channels originate outside the social system.
Step 2: Detailed Explanation:
Let us classify the given options based on these dimensions:
- Radio (A) and T.V. (B): These are mass media channels that originate outside the local village (Cosmopolite) and do not involve direct, face-to-face personal interaction (Impersonal). Thus, they are classified as Impersonal Cosmopolite channels.
- Local people (C): These are personal channels originating inside the local social system, classifying them as Personal Localite channels.
- Extension agents (D): These are professionals originating outside the local system (Cosmopolite) who interact face-to-face with farmers, classifying them as Personal Cosmopolite channels.
Therefore, only Radio (A) and T.V. (B) are Impersonal Cosmopolite channels.
Step 3: Final Answer:
The correct channels are A and B only, matching Option (B).