The Mahabharata Has an interesting anecdote.
Lord Krishna, while His sister, Subhadra was advanced state of pregnancy,sat by her side and explained the intricate Battle formation called Padma Vyuha.
On being asked he replied that He was teaching his nephew,Abhimanyu in the womb.
The child responded by saying ‘Hmmmmm)
Scroll down for Video.
He completed the part about entering the Formation and was about to continue with the process of emerging from it, he had to leave the place.
Later in the Kurukshetra Battle, Abhimanyu entered the Padma Vyuha set by Drona, was unable to come out and was killed by Jayathratha, while Ajuna wnad the pther Pandavas were lured away in the battle filed elsewhere.
Consider this with the advanced genetics and gynaecology known to ancient Indians.
For those who doubt hat a Fetus would not respond, we now have Ultra Scan better see while scanning takes place.
Now we have a real Life Video showing a Baby clapping its hands while its Mother sings a nursery Rhyme.
In Hinduism it is stressed that those around pregnant women and they also must refrain from unhealthy words and behaviour as this would affect the child.
It is recommended that one should recite the Sunadara Kanda of Ramayana, that part that describes Hanuman’s efforts to find Sita, to ensure that the child is born healthy and wise
(Knowing Krishna’s ways, I suspect it was a deliberate ploy for None can ask Krishna do other than what he intends, as Balarama observes on one occasion).