The correct option is B Absence of transport of organic solute to roots
Removal of ring bark of a tree from the trunk is called as ring barking. This leads to death of the plant. During ring barking, the vascular cambium, secondary phloem and periderm are removed. Due to this, tree is unable to synthesize more phloem. Thus, transport of organic food molecules produced by leaves is interrupted to the roots. Therefore, roots cannot function and eventually dies and in turn tree dies.
Thus, the correct answer is option B.