Correct option is A
· Carbon (A-II): It is involved in basic structural functions as it is a fundamental component of all organic compounds.
· Nitrogen (B-IV): Essential for vegetative growth as it is a major component of chlorophyll and amino acids.
· Phosphorus (C-III): Vital for energy transfer processes in plants through ATP.
· Molybdenum (D-I): It plays a crucial role in nitrogen fixation.