The correct option is B Parenchyma
Parenchyma is a well differentiated plant tissue. Parenchyma cells are living cells and may remain meristematic at maturitymeaning that they are capable of cell division if stimulated. They have thin but flexible cellulose cell walls. Parenchyma is a versatile ground tissue that generally constitutes the filler tissue in soft parts of plants. It forms, among other things, the cortex and pith of stems, the cortex of roots, the mesophyll of leaves, the pulp of fruits and the endosperm of seeds. Parenchyma cells are living cells and may remain meristematic at maturity.