Step 1: Understanding the Concept:
J. Paul Leagans' extension learning situation model defines five core instructional components centered around the target audience.
Step 2: Detailed Explanation:
In J. Paul Leagans' classic Extension Learning Situation Model:
The five essential elements are: 1. The Instructor (Extension Educator), 2. The Learning Material Subject Matter, 3. The Physical Facilities, 4. The Teaching Methods/Aids, and 5. The Learner (Farmer Homemaker Rural youth).
Because the ultimate objective of all non-formal adult education is bringing about desirable behavioral changes (in knowledge, attitudes, and skills) in the learner, the Learner is the focal, central element around which all other four elements are planned and organized.
Step 3: Final Answer:
Thus, the central element in the extension teaching-learning process is the Learner, matching option (C).