The correct option is A disproportionation
0P4+3NaOH+3H2O⟶3Na(H2+1PO2)+−3PH3
Clearly, this is a disproportionation reaction. On the left hand side, elemental phosphorus has oxidation state 0. In PH3 oxidation state of phosphorus is -3. In sodium hypophosphite, the oxidation state of phosphorus is +1.