Which system is responsible for transporting blood, nutrients, and gases?

• A. Lymphatic system
• B. Nervous system
• C. Cardiovascular system
• D. Respiratory system

Answer: (C)

Transport throughout the body is carried by the cardiovascular system, which includes the heart and blood vessels. This system pumps blood that carries nutrients absorbed from the digestive tract and oxygen to tissues, while also carrying carbon dioxide and other wastes away for removal. The respiratory system is involved in exchanging gases (oxygen and carbon dioxide) but does not move blood itself; the lymphatic system transports lymph and participates in fat absorption, not the primary transport of blood, nutrients, and gases. The nervous system coordinates functions, not the transport of these substances. So the cardiovascular system best fits the description.