The correct answer is (c). Xylem is a vascular tissue in plants that transports water and minerals from the roots to the leaves. It is made up of dead cells that are arranged in long, narrow tubes. The tubes are filled with a liquid called sap, which carries the water and minerals.
(a) Transportation of food: Phloem is the vascular tissue in plants that transports food from the leaves to the rest of the plant. It is made up of living cells that are arranged in long, narrow tubes. The tubes are filled with a liquid called sap, which carries the food.
(b) Transportation of amino acids: Amino acids are the building blocks of proteins. They are transported in the phloem along with other nutrients.
(d) Transportation of oxygen: Oxygen is transported in the xylem along with water and minerals. It is used in photosynthesis, which is the process by which plants make food.