Question

multiple choice question which of the following is the most common cause of mental retardation and the leading preventable cause of birth defects in the united states? alcohol nicotine marijuana opioids

Explanation:

Alcohol use during pregnancy leads to Fetal Alcohol Spectrum Disorders (FASDs), which are the most common preventable cause of mental retardation and birth defects in the U.S. The other substances do not hold this leading preventable status for these conditions.

Answer:

O alcohol