________ is the method of using sound-wave reflections to obtain a picture of the developing fetus that can be used to estimate the gestational age and detect physical abnormalities

__________ is the extent to which a measure assesses what it claims to measure

A) Operationalization B) Reliability C) Validity D) Control group

In cultures that emphasize collectivism, people value __________

A) independence B) personal achievement C) collaborative endeavors D) choice in relationships