(B) (ii) and (iii)
The correct events are: (iii) Absorption of light energy by chlorophyll, and (ii) Conversion of light energy to chemical energy (along with splitting of water into hydrogen and oxygen). Carbon dioxide is reduced (not oxidised) to carbohydrates, and water is produced by splitting, not formed from hydrogen and oxygen.
Source: Life Processes, Section 5.2.1
The textbook explicitly lists the three events of photosynthesis: absorption of light by chlorophyll, conversion of light energy to chemical energy + splitting of water, and reduction of CO₂ to carbohydrates. Statement (i) is wrong because CO₂ is reduced, not oxidised. Statement (iv) is wrong because water is split into hydrogen and oxygen, not formed from them. Examiners expect students to know these distinctions precisely.