It is difficult to study brain development in infants because

A) scans pose a radiation risk.
B) infants wiggle too much for the examinations.
C) the latest brain-imaging technologies can't make out fine details.
D) All of these.

Brain Imaging Technologies

Tools and methods used to visualize and study the structure and function of the brain.

Radiation Risk

The potential harmful effects on human health and the environment from exposure to ionizing radiation, which can lead to acute or chronic health issues depending on the dose and duration of exposure.