C
Dictionary’s are made of facts not opinions.
Answer:
b. ex post facto or quasi-experimental.
Explanation:
An ex post facto search is done when a researcher cannot manipulate one of the variables such as sexual behavior or smoking (as described in the question), ie this type of research is done when it is not possible to manipulate the independent variables as they already arrive ready for research. Ex-post fact research deals with variables that are unmanipulated in nature. Quasi-experimental research can also be done for this same situation.
Answer:
People choose to become dental hygienists because they can:
Help their patients lead healthier lives. Provide service to others. ... Educate patients about the importance of oral health. Earn a competitive salary with an Associate degree.