Just like we need nutrients in our diet, plants need nutrients like molybdenum and nickel. they absorb these nutrients through their
stems
leaves
roots
flowers

Just like we need nutrients in our diet, plants need nutrients like molybdenum and nickel. They absorb these nutrients through their roots that are deeply embedded within the soil. A deficiency in this basic nutrients would result to stunting the growth of plants and its overall capacity to survive and thrive within its environment.

Answer active artificial immunization;

Your answer is c- spermicides!