The fetus can hear sound at about months after conception.

Around week 16 of pregnancy, it’s likely that these structures are well-established enough for your baby to start detecting some limited noises. Some of these are sounds that you might not even notice yourself — the gurgle of your stomach and whoosh of air in and out of your lungs. Over the next few weeks though, your baby will hear more and more of the outside world. By week 24, babies have been shown to turn their heads in response to voices and noises.

Ithink it’s d. that should be correct.