Source traits that are genetically determined are referred to as source traits

Richard is homosexual and has been for many years. Ever since high school he knew that he was gay, although he often wished that he was heterosexual. The fact that Richard is sexually attracted to men and not to women defines his sexual __________

a. attachment b. identification c. orientation d. preference

Because collecting blood samples to assess cortisol levels can be painful, researchers frequently

collect __________ to evaluate these hormonal concentrations. Fill in the blanks with correct word