Use the excerpt to answer the question.
When a dog gets a whiff of something new, he sniffs the odor into an amazing smelling machine. His nose has a special pocket called the olfactory recess that is separated from the rest of his nose by a thin bone. He can store air in that recess while he continues to breathe in and out normally, which gives his brain more time to interpret the smell. And if he wants more of that same smell? Take a close look at his nose. He has two big nostrils with slits along the sides. Air goes in the round section and out through the slits. This way, the exhaled air doesn’t get in the way of the incoming smells. (National Geographic Kids)
Which of the following is a central idea of this paragraph?
(1 point)
Responses
Dogs have two big nostrils and slits in their noses.
Dogs have two big nostrils and slits in their noses.
The structure of a dog's nose enhances its sense of smell.
The structure of a dog's nose enhances its sense of smell.
Dogs enjoy smelling new things.
Dogs enjoy smelling new things.
Dogs use their noses to breathe in and out.