Final answer:
The correct statement that shows good understanding of fetal development at 20 weeks is that the expectant mother feels the baby moving daily. By this time, the fetus is active and strong limb movements are noticeable.
Step-by-step explanation:
The question is about assessing a client's understanding of fetal development at 20 weeks of pregnancy. The correct statement that indicates a good understanding is "I feel the baby moving every day now." This is because during the second trimester, specifically around 16-20 weeks, the fetus becomes more active and limb movements are stronger. As a result, the expectant mother may begin to feel quickening, or fetal movements. At this stage, the fetus has a regular heartbeat, the organs and structures, including the kidneys, are continuing to develop, and the placenta is fully functioning.