Let us check each option: 1. A = B ≥ C = D ≤ E ≥ F→ False (here the relation between A and F cannot be determined) 2. A = B ≥ C = D < E ≥ F→ False (here the relation between A and F cannot be determined) 3. A = B ≥ C = D ≥ E ≥ F → True 4. A = B ≥ C = D > E ≥ F → False (here A > F) Hence, the correct symbol to satisfy the given condition is “ ≥ ”.