Which of the following is an amide fertilizer?

✅Explanation:
An amide fertilizer is a type of nitrogen-based fertilizer that contains nitrogen in the form of an amide functional group (-NH-CO-). Of the options listed, only urea has this structure.
-Urea: CO(NH₂) ² (Diamide of carbonic acid)
-CAN: Ca (NO₃) ₂(NH₄) ₂ (Ammonium nitrate and calcium nitrate)
-Ammonium chloride: NH₄Cl (Nitrogen in the form of ammonium ion, not amide)
-Sodium nitrate: NaNO₃ (Nitrogen in the form of nitrate ion, not amide)