Question

green plants normally do not suffer from the deficiency of the following mineral (a)phosphorus (b)sulphur (c)iron (d)carbon

Answer 1

actually green plants  suffer from  three things they are iron nitrogen potassium as the soil is fertilized by urea and many artificial fertilizers so it    contains  N (Nitrogen),Fe(Iron),K(potassium).

as the production of food  for plants requires carbon(CO2)it do not suffer for carbon because 85% of gas present in the air is carbon dioxide, and also trees or plants convert the carbon dioxide into oxygen.

Answer 2

carbon is the only thar when the green plants do not suffer