Naturalistic observation, correlational studies, the clinical method, and the survey method are considered __________ methods

Which of the following must a person exhibit in order to be diagnosed with alcohol use disorder in DSM-5?

a. hallucinations b. difficulty regulating body temperature c. a problematic pattern of use d. high levels of anxiety

Sperm live for up to _____ days and can lie in wait for the ovum, which survives for _____ day(s)

A) 2; 1 B) 4; 2 C) 6; 1 D) 8; 2