The correct option is B Plasmodesmata
In plants cell wall possesses minute cytoplasmic bridges between adjacent cells. They are called as plasmodesmata. A plasmodesmata is a fine cytoplasmic canal lined by plasma membrane and often having an ER tubule called as desmotubule. Plasmodesmata produce a continuum of living material called as symplasm, in the plant body. Cell walls and intercellular spaces constitute non living component of plant body called as apoplasm.