Experimental studies manipulate factors to determine their effects.
An experimental study involves manipulating one variable (called an independent variable) to determine its effect on another variable (a dependent variable). An example of a manipulated variable (independent variable) can be hours of sleep, and the dependent variable (resulting variable) can be speed of reflexes. Hours of sleep (independent variable) can be manipulated (increased or decreased) to see the result it has on speed of reflexes (outcome or dependent variable).
The words needed to complete the sentence structure are quantitative and qualitative. They are the types of research that further investigates the study. In a qualitative research, it is the deeper investigation of the paper which uses some methods like focus groups. Meanwhile, a quantitative research gathers data through surveys and audits.
As there is no comments are given but i am going to give you the answer.
<span>The comment that suggests that an adolescent has grasped the concept of how syphilis is spread is;
"</span><span>Next time I'll be smart enough to look at my partner to see if he has any sores."
Hope it helps.</span>
It depends on the genes of the individuals