The extra 21st chromosome that is found with Down syndrome usually comes from the father's sperm

Some researchers examining the cause of anxiety disorders

have found that those with these conditions tend to evaluate ambiguous situations in a negative light. This research has focused on presenting _____ to those suffering from an anxiety disorder—such as "bury" and "berry" or "sword" and "soared"—to see how that individual interprets the word. Those with high levels of anxiety interpret these pairs in the more threatening manner. A) morphemes B) homophones C) antonyms D) syntactic dyads

Children who live in the midst of constant danger, chaos, and deprivation,

A) gain flexible problem-solving skills which, in turn, leads to better coping. B) have fewer anxieties than children with school phobias. C) are at risk for long-term emotional distress and behavior problems. D) have some short-term, but few long-term, emotional problems.