When a researcher wants to determine whether a variable is simply correlated with another variable, he or she conducts a(n) _____.
A) intervention study
B) single-blind study
C) double-blind study
D) epidemiologic study
Question 2
A__________is a nutrition professional who helps people make food choices to support a healthy lifestyle.
A) medical doctor
B) gastroenterologist
C) dietitian
D) chiropractor