During inspiration, the area of the thoracic cavity will _.

Explanation

Option A: Incorrect. The muscles involved in inspiration actually contract, causing the thoracic cavity to expand. Option B: During inspiration (inhaling), the area of the thoracic cavity increases. This is achieved through the contraction of the diaphragm and the external intercostal muscles. The diaphragm moves downward and the ribcage expands as the external intercostal muscles contract. These actions result in an increase in the volume of the thoracic cavity, creating negative pressure within the lungs. This negative pressure allows air to be drawn into the lungs, facilitating the process of breathing.Option C: Incorrect. The thoracic cavity increases in size during inspiration, not decreases. Option D: Irrelevant. This option does not relate to the changes that occur during inspiration.