Every mammal has

Explanation

This question is asking about the number of kidneys that every mammal has. Kidneys are important organs that help filter waste products from the blood, and every mammal needs at least one to survive. The options given are one kidney, two pairs of kidneys, one pair of kidneys (which is the correct answer), four kidneys, and none of the above. Mammals are a group of warm-blooded animals that have hair or fur, give birth to live young, and nurse their offspring with milk. Examples of mammals include humans, dogs, cats, cows, and whales. The correct answer to this question is option C, which states that every mammal has one pair of kidneys. This means that mammals, like humans and dogs, have two kidneys that work together to filter blood and remove waste products. It is important to note that not all animals have the same number of kidneys. For example, fish typically have one kidney, while reptiles can have one or two. Birds usually have two kidneys, but some species have only one. In conclusion, the correct answer to this question is option C, which states that every mammal has one pair of kidneys. Mammals are a group of warm-blooded animals that have hair or fur, give birth to live young, and nurse their offspring with milk. Kidneys are important organs that help filter waste products from the blood.