The correct option is C Phloem
The plant carries photosynthesis during the growth and stores the prepared food in the leaves which is further channelized to the different part of the body. The phloem conducts the food from the source to the sink (the part of the plant requiring or storing food). During spring, this process is reversed as the food stored in the sink is mobilised toward the growing buds of the plant, through the phloem. Thus, the movement of food in the phloem is bidirectional. So, the correct answer is option B.