The vascular tissue in leaves is located in the midrib and its branches, which is option (d). Vascular tissue in plants consists of xylem and phloem, responsible for transporting water, minerals, and nutrients throughout the plant. In leaves, the midrib is the central vein that runs down the center of the leaf, and from it, smaller veins branch out into the leaf's lamina or blade. These smaller veins form a network of vascular tissue that delivers water and nutrients from the roots to the cells of the leaf and transports sugars produced during photosynthesis to other parts of the plant. The presence of vascular tissue in both the midrib and its branches ensures effective and efficient distribution of essential resources within the leaf, supporting the leaf's vital functions in photosynthesis and gas exchange.
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~~~Harsha~~~