Question

which organ forms in the third trimester? kidneys ears lungs heart

Explanation:

• Kidneys start to form earlier in fetal development.
• Ears also begin their development well before the third trimester.
• The heart is one of the first organs to form in embryonic development.
• Lungs undergo significant development and maturation in the third trimester. Surfactant production (important for lung function - preventing alveoli from collapsing) ramps up, and the lung tissue continues to develop to prepare for breathing air at birth.

Answer:

lungs