Answer:
B
Step-by-step explanation:
Phloem transport sugar, a product of photosynthesis to the parts of the plant that needs it. The transport of organic solutes from one part of the plant to the other through phloem sieve tubes is called translocation of organic solvents. Translocation of organic material occurs from source to sink. Since the source and the sink may change their position, the movement is bidirectional.