Resistance to pests and diseases is often provided by

Answer: Option C

Resistance to pests and diseases is often provided by Potassium. Potassium is associated with the movement of water, nutrients and carbohydrates in plant tissues. It involves enzyme activation within the plant, which affects protein, starch, and adenosine triphosphate (ATP) production.
Plant disease resistance protects plants from pathogens by pre-formed structures and chemicals and by infection - induced responses of the immune system.