One of the following has been linked to an increase in left-handedness early in life.
A) prenatal exposure to ultrasound
B) prenatal exposure to x-rays
C) routine childhood immunizations
D) diet

Question

Quizplus · Accepted Answer

Prenatal exposure to ultrasound has been linked to an increase in left-handedness in children. Studies have shown that ultrasound exposure can affect brain development, which may lead to changes in handedness. However, more research is needed to fully understand this relationship. There is no evidence to suggest that prenatal exposure to x-rays, routine childhood immunizations, or diet have any impact on the development of handedness.

One of the Following Has Been Linked to an Increase