Correct Option: B

Manganese is essential for many plant functions. Some of them are :
• The assimilation of carbon dioxide in photosynthesis.
• It is involved in the Hill Reaction where water is split during photosynthesis.
• It aids in the synthesis of chlorophyll and in nitrate assimilation.
• Manganese activates fat forming enzymes.
• It functions in the formation of riboflavin, ascorbic acid, and carotene.
• It functions in electron transport during photosynthesis.