Answer:The heart of the frog is located underneath (to the ventral side) the lungs.The location of heart allows the pumping of fresh oxygen at a high pressure as it leaves from the heart and at lower pressure as it enters into the heart.
The heart is beneath the breastbone in the chest cavity of the frog. It's simple sac-like lungs are located in the back , on either side of the heart. In frogs, which can also do cutaneous respiration(skin-breathers), the lungs are another place for oxygen and carbon dioxide
The kind of goods that are normally consumed together like peanut butter &jelly and bacon & eggs are called complementary goods. The correct answer is A.