Statistically, the greatest risk to health, safety, and behavior or psychological problems is

In attempt to examine whether research done in a

laboratory setting can, in fact, be generalized to the "real world," Douglas Mook pointed out that studies that had high internal validity often had high external validity and could be repeated in a way that yielded the same, or at least similar, findings. Which principle of critical thinking does this address? A) Occam's Razor B) Ruling out rival hypotheses C) Falsifiability D) Replicability

Babies everywhere start babbling at about the same age, but for babbling to develop further,

A) babies must be able to produce intonation patterns. B) the speech must be in the babies' native language. C) it needs to be paired with rudimentary sign language. D) babies must be able to hear human speech.