Step 1: Start with the sure pairs.
Sunflower is a well-known oil seed, so D goes with IV. Only option 1 has D-IV.
Step 2: Cut options.
Options 2 and 3 have D-III (oil seeds with dates), which is wrong because dates are a fruit. Option 4 has D-II, which is wrong because cucumber is not an oil seed. Only option 1 remains.
Step 3: Verify with C.
Option 1 gives C-III. Dates are a fruit, so this is correct.
Step 4: Verify with A.
Option 1 gives A-I. Fenugreek is a legume, so this is correct.
Step 5: Note the odd pair.
Option 1 gives B-II, fibre crops with cucumber. That pairing is doubtful in the paper itself, but it does not change the choice because every other option has clear errors.
Final Answer:
Option 1 is the only option with no clear error.
\[ \boxed{\text{Option 1}} \]