The correct option is C Leaf of maize
In dicot plants, leaves are dorsiventral with mesophyll parenchyma differentiated into two regions-upper-palisade, lower-spongy. For example, leaf of Eucalyptus and Nerium.
On the other hand in monocot plants, leaves are isobilateral with mesophyll parenchyma being undifferentiated having only spongy parenchyma. For example, leaf of maize.