Ethel's conversations are hard to follow. She doesn't stay on the same topic, and there is no logical transition between topics. Ethel's speech is an example of

"Black tar" is

A. a name given heroin from Mexico that is brown or black in its pure form. B. a type of street heroin that has been "cut" with powdered charcoal. C. a synthetic opioid that is twice as potent as pure heroin. D. an opium extract that is imported from Southeast Asia.

Research on the quality and extent of child care shows that

A) mother–child interaction is more favorable when children spend fewer hours in child care. B) most infants who are placed in full-time child care are insecurely attached. C) full-time, but not part-time, work during the first year is detrimental to attachment security. D) even in high-quality settings, the amount of time spent in child care is related to behavior problems.