The correct option is B Phloem
Xylem is the complex tissue of vascular plants that serve in the conduction of water and mineral from root to different plant parts. Angiospermic phloem is a composed of four elements namely, sieve elements, companion cell, phloem fibres and phloem parenchyma and is responsible for transport of food from the leaves to the other parts of plants. Vascular cambium is a lateral meristem and is responsible for secondary growth. Mesophyll cells of leaves are chlorophyllous and are the site of photosynthesis. Pith serves in storage and transport of minerals. Thus, the correct answer is B.