Psychologists vary in agreement on the validity of a. social desirability bias b. response bias c. source errors d. projective tests

Psychologists vary in agreement on the validity of  projective tests. Correct D

Projective test are personality tests used by psychologists in which external stimuli are used to project internal attitudes, traits, and behaviour patterns.  Psychologists vary in agreement on the validity of these test, because the extent to which identical personality interpretations can be reached by different evaluators is different.

a polymer is a chainlike molecule made up of small molecular units. these small molecular units are called monomers. monomers of polymer can be joined together either naturally or synthetically.  

i think it is true in my reasonment ..