Which secondary nutrient is known for improving leaf health and enzyme function in plants?

The correct answer is calcium. Calcium plays a crucial role in the overall health and development of plants. It is essential for maintaining cell wall structure and stability, which translates to improved leaf health. Calcium assists in the growth of new tissues and is vital for the functioning of enzymes that facilitate various biochemical processes within the plant. By promoting proper cell division and elongation, calcium contributes directly to plant robustness and resilience.

In addition to these functions, calcium also helps regulate nutrient uptake and promotes the transport of other nutrients throughout the plant. This multifaceted role makes calcium indispensable for healthy plant growth and function.