A study of a new medication found that patients who took the medicine have reduced blood pressure, compared to those who did not take the medicine. The research team concluded that the medicine caused the reduction in blood pressure. Which study design did they most likely use? (2 points)

a
They most likely used an experiment with patients randomly assigned to take the medicine or not take the medicine.

b
They most likely used an experiment with patients randomly assigned to groups based on their blood pressure.

c
They most likely used a survey asking patients if they took the medicine and how their blood pressure was affected.

d
They most likely used a survey asking patients if they took the medicine and if they felt the medication helped their blood pressure.

answer: ff

f

step-by-step explanation: f

ff

statement #3: proof- ang is congruent to ang ecd : angles are congruent.  

step-by-step explanation:

1: the missing angles in statement #3  

a.) acb  

reason- the reason why the answer is acb is because angle ecd and angle acb are both the same size *that's what the word congruent means this is really simple.  

2: the missing word in reason #3  

c.) vertical  

reason- the reason why the answer is vertical is because the angles in that diagram on figure 2 is slanted, which is vertical, and the e and a both lay on vertical lines. along with the other's, but e and a are the 2 main points you want to focus on. and c is kind of like your starting point, because c is for both angles, not just one.  

i hope that was and understanding.

i belive false if so your welcome if not well idk

the correct answer would be c