Before Concluding That People Are Getting Smarter,which of the Following

Multiple Choice

Before concluding that people are getting smarter,which of the following represents an alternative explanation for the rise in IQ scores?

A) Children today have much more practice with the types of questions asked on intelligence tests.
B) Intelligence tests are outdated and need updating to better reflect a new generation of knowledge.
C) Americans are increasing their vitamin intake beyond the recommended doses;this increased intake leads to better brain functioning.
D) The world is much less complex and less physically challenging for the current generation than it was for previous generations.