NADP is converted into NADPH₂ in:

Explanation

NADP is converted into NADPH₂ during non-cyclic photophosphorylation, which occurs in the light reactions of photosynthesis. In this process, electrons from water are excited by light, passed through photosystems II and I, and finally transferred to NADP⁺, forming NADPH₂. Other processes like cyclic photophosphorylation, dark reactions, and photorespiration do not produce NADPH₂.