To ensure they are providing ethical treatment, psychologists should
review current research for the most effective treatments
read magazines for the most popular treatments
read textbooks to ensure treatment matches their original training
follow their intuition to ensure treatment "feels" right

To ensure they are providing ethical treatment, psychologists should;

A. Review current research for the most effective treatments

Psychologists should always review current research for the most effective treatments. Reading magazines for "the most popular treatments" is not so ensuring. When approval is required, psychologists must provide accurate information about their research. Hence, the other answers are incorrect.

d eras and periods

firearm identification is the process of analyzing the bullets and cartridge cases left at a crime scene to determine if they came from a particular firearm. marks on the bullets and cartridges may be common to every firearm of that type. these are called class characteristics.