Which of the following developmental events is correctly matched with its trimester?

• A. Lung maturation - Second trimester
• B. Significant weight gain - First trimester
• C. Rapid brain development - First trimester
• D. Formation of major organs - First trimester

Answer: (D)

Verified step by step guidance

1. Understand the timeline of human development during pregnancy, which is divided into three trimesters, each with distinct developmental milestones.
2. Recall that the first trimester is crucial for the formation of major organs. This period includes the development of the heart, brain, and other vital organs.
3. Recognize that lung maturation typically occurs later in pregnancy, primarily in the third trimester, as the lungs prepare for breathing air after birth.
4. Identify that significant weight gain is more characteristic of the third trimester, when the fetus grows rapidly in size and weight.
5. Note that rapid brain development continues throughout pregnancy but is particularly significant in the third trimester, as the brain undergoes complex growth and differentiation.