What is the best way to promote healthy brain development for infants and toddlers? a. provide a variety of positive sensory experiences. b. provide plenty of time for quiet relaxation. c. provide opportunities each day for peer interactions. d. none of the above is true. e. b and c only are true.

Which of the following will abstinence most likely to improve? a.creativity b.physical strength c.flexibility d.emotional health

*edit* i took the test and i picked a and it was incorrect for its c! rank the following suggestions for preventing std, in order of increasing effectiveness. 1) using latex condoms properly 2) using spermicidal foam or jelly with a monogamous partner 3) abstaining from sexual intercourse and genital contact a. 1, 2, 3c. 2, 1, 3

Investigator a has biological specimens that are coded and linked to identifiers of the source individuals. investigator a provides the specimens to investigator b but does not provide the individual identifiers. investigator b agrees not to re-identify the source individuals. is investigator b's research using the biospecimens human subjects research according to the definition of human subjects research in the federal regulations?