What is a key point in the development of a fetus during the second trimester?

A key point in the development of a fetus during the second trimester is the rapid growth and maturation of organs and systems. This period is marked by the development of sensory capabilities, such as the ability to hear sounds and respond to light. Additionally, the fetus begins to develop more defined physical features, including facial characteristics and limbs, while the skin becomes less transparent and more opaque. Overall, the second trimester is crucial for establishing the foundation for further growth and development in the later stages of pregnancy.