What best describes the function of veins in plants?

The function of veins in plants is primarily to bring water and minerals to the leaves, a process essential for the survival and health of the plant. Veins are formed of vascular tissues, specifically xylem and phloem. Xylem transports water and dissolved minerals absorbed from the soil up to the leaves, where these resources are vital for processes such as photosynthesis and transpiration. The efficient transportation system formed by veins ensures that the leaves receive the necessary support they need to convert sunlight into energy.

While other options like transporting sugars to roots or storing energy are relevant to plant biology, they relate to other functions and parts of the plant. The process of photosynthesis occurs in the leaves thanks to the water and nutrients provided by the veins; thus, the primary role of veins is effectively linked to ensuring that the leaves receive their essential supplies.