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# Biofertilisers give better yield when added along with

$\begin{array}{1 1}(A)\;\text{Phosphate}\\(B)\;\text{Calcium}\\(C)\;\text{Nitrogen}\\(D)\;\text{Urea}\end{array}$

Biofertilisers give better yield when added along with phosphate
Hence (A) is the correct answer.