_____ is the best time to learn languages.

When you adopt a certain framework or strategy for solving a series of problems,you may fail to see other,more efficient ways of solving some of the problems.This is referred to as ______.

A) functional fixedness
B) procrastination
C) a heuristic
D) mental set

Generalizing from the text,which body system is likely to give an elderly person the LEAST trouble?

A) Digestive system
B) Skeletal system
C) Circulatory system
D) Sensory system

Which of the following is a reason why sex workers are at higher risk of contracting HIV/AIDS and other sexually transmitted infections?

A) Many of them are injection drug users.
B) Most of them do not have orgasms when offering sexual services to their clients.
C) Many of them require regular blood transfusions.
D) Most of them indulge in anal sex rather than oral sex.

Which statement is TRUE about the term nervous breakdown?

A) It is a statistically valid clinical syndrome.
B) It is not a recognized clinical term but is used by laypersons.
C) Although not an official diagnosis, it is a commonly used medical term.
D) It was an official clinical syndrome in early versions of the DSM but is not included in the current edition.

In considering gender differences,it is helpful to remember that

A) there are no gender differences in behavior that are common to all human cultures.
B) genetic similarities between the genders are much greater than genetic differences.
C) genetic differences between the genders do not contribute to gender differences in behavior.
D) all of these statements are true.