The correct option is C Papaver
Laticiferous vessels are found in plants that produce latex, the milky fluid that coagulates after exposure to air. Laticiferous vessels are only found in angiosperms, such as the Opium, poppy. Laticifers begin as single cells and then grow into tube-like structures. Laticifers are connected horizontally to form long chains. Within the Opium poppy, laticifers or lacteal ducts are located below the phloem tissue and it never comes in contact with the xylem vessels.
Thus, the correct answer is option C.