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

Which of the following definitions best describes 'GZinc - Measurement'?

A. Standard method for whole-grain zinc content.
B. Harvest a mature upper ear and measure its weight
C. Standard method for endosperm protein content.
D. Recommended to take multiple plants and measure the height from the base of a plant to the insertion of the first tassel branch, enter the data individually in the FieldBook and calculate the average.

Answer: Standard method for whole-grain zinc content.