Task: Class Definition Understanding (ontology: Food_Agriculture/Crop_Ontology)

Which of the following definitions best describes 'Iron (Fe) deficiency'?

A. Deficiency of Iron (Fe) in the plant measured at flowering stage
B. Degree of tolerance to high temperature
C. Degree of tolerance to drought stress
D. Degree of tolerance to salinity

Answer: Deficiency of Iron (Fe) in the plant measured at flowering stage