During sensitive periods of brain development like cell migration the brain is vulnerable to effects like: a. malnutrition b. infection c. toxins /drug use d. b and c e. all of the above

E. All of the above

Explanation:

A sensitive period of brain development is a period during which the brain is especially impacted by certain factors or experiences. As brain growth is the fastest before child's birth and during early childhood, it's the most sensitive during this time. That's why this is the key period for later health and development. In addition to genes, brain development may depend on the presence of all listed factors. Malnutrition and exposure to infections and toxins may negatively affect the way a child's brain is developing.

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