Prone sleeping (sleeping in a face-down position), low birth weight, and passive exposure to cigarette smoke are all risk factors for

Which of the following prental diagnostic methods is the most widely used technique?

A) amniocentesis B) chorionic villus sampling C) ultrasound D) maternal blood analysis

What is the most likely cause of slower reaction time for everyday tasks and activities for an older individual?

A) The preliminary effects of Alzheimer's disease B) Geriatric dysthymia C) The pruning of unused neural connections D) Dendritic loss and the slowing of synaptic speed