Final answer:
The correct arrangement of the bird circulatory system in series is right heart, lungs, left heart, body tissues, representing double circulation.
Step-by-step explanation:
The bird circulatory system is arranged in series as follows: right heart, lungs, left heart, body tissues. Hence, the correct sequence is d. right heart, body tissues, left heart, lungs. This system is known as double circulation, which is characteristic of birds and mammals, and includes both the pulmonary circuit and the systemic circuit. In birds, blood is first pumped from the body tissues to the right side of the heart, which then sends it to the lungs to become oxygenated. Afterward, the oxygen-rich blood is sent to the left side of the heart, which in turn pumps it through the systemic circuit to provide oxygen to the body tissues.