Final answer:
During the second trimester of pregnancy, around 18 to 24 weeks gestation, the baby's hearing begins to develop. Anna can start playing soothing music or sounds to her baby at this stage to create a calm and peaceful environment. It's important to choose music or sounds that she finds enjoyable and relaxing.
Step-by-step explanation:
When speaking to Anna, you can reassure her that her baby's hearing begins to develop during the second trimester of pregnancy, around 18 to 24 weeks gestation. At this stage, the baby's ears have formed, and they are able to perceive sounds from the outside world. However, it's important to note that the baby may only hear muffled sounds, as the amniotic fluid and other barriers dampen and distort the sound.
Therefore, it would be best for Anna to start playing soothing music or sounds to her baby during the second trimester. She can create a calm and peaceful environment for her baby by playing soft music or lullabies. This can help promote bonding and potentially have a calming effect on both Anna and her baby.
Overall, it's important for Anna to choose music or sounds that she finds enjoyable and relaxing, as her positive emotions can also have a positive impact on her baby's development.