Maize (option B) has Kranz anatomy.

Explanation:
Maize, also known as corn, is a C4 plant that exhibits a specialized leaf anatomy called Kranz anatomy. Kranz anatomy is characterized by the presence of two distinct types of photosynthetic cells: bundle sheath cells and mesophyll cells.

Bundle sheath cells:
- In maize, the bundle sheath cells are arranged in a ring-like manner around the vascular bundles.
- They are tightly packed and contain numerous chloroplasts.
- The walls of bundle sheath cells are thickened and contain many plasmodesmata, which allow for the exchange of metabolites between cells.
- The bundle sheath cells are responsible for the initial fixation of carbon dioxide (CO2) during photosynthesis.

Mesophyll cells:
- The mesophyll cells of maize leaves surround the bundle sheath cells.
- They are loosely arranged and contain fewer chloroplasts compared to bundle sheath cells.
- The mesophyll cells are involved in the initial uptake of carbon dioxide from the atmosphere.

Kranz anatomy and C4 photosynthesis:
- Kranz anatomy is a structural adaptation that enhances the efficiency of C4 photosynthesis.
- C4 photosynthesis is a biochemical pathway that helps plants overcome the limitations of the traditional C3 pathway, especially under high light and high temperature conditions.
- In C4 plants like maize, carbon dioxide is initially fixed into a four-carbon compound in the mesophyll cells, thanks to the enzyme phosphoenolpyruvate carboxylase (PEP carboxylase).
- The four-carbon compound is then transported to the bundle sheath cells, where it is decarboxylated to release CO2.
- The CO2 released in the bundle sheath cells is then used in the Calvin cycle for the synthesis of sugars.
- This spatial separation of initial CO2 fixation and the Calvin cycle helps reduce photorespiration and increases the efficiency of carbon fixation.

Conclusion:
In conclusion, maize (option B) exhibits Kranz anatomy, which is a specialized leaf anatomy found in C4 plants. This anatomical adaptation enhances the efficiency of C4 photosynthesis, allowing maize to thrive in environments with high light and temperature conditions.

Kranz anatomy is a specialized structure in C4 plants where the mesophyll cells are clustered around the bundle-sheath cells in a ring-like fashion. The number of chloroplasts in the bundle-sheath cells is more than that in the mesophyll cells. This is found in C4 grasses such as maize and a few dicots.