Answer:
During a routine ultrasound, Jaya notices that her fetus is clearly sucking its thumb, in much the same way it will as a newborn. Jaya's ultrasound technician informs her that by the 18th week, fetuses tend to spend increasingly more time in this position.
Explanation:
18th month fetus has following characteristics :
Hence, Jaya's ultrasound technician informs her that by the 18th week.