Answer:
b. experiment
Step-by-step explanation:
An observational study is one in which the researchers monitor the effect of a risk factor on subjects without introducing interventions for the purpose of noting differences in results. An experiment is mainly a randomized control trial where subjects are assigned to groups and chosen by chance. Interventions are also introduced by the researchers so as to note the different possible results within the groups and among participants.
The above-described process incorporates an experiment and that is why the researchers introduce protein level diet as interventions. It also employs the random assignment of subjects to different groups so as to improve the accuracy of the process.
8/10 are equal to 4/5 because 4×2=8 and 5×2=10 so 8/10
After h hours, she will have traveled: 70h miles
Answer:
are they all questions
Step-by-step explanation:
it's so confusing
Supplement of an angle is what must be added to that angle to get 180
51+supplement=180
minus 51 both sides
supplement=129
answer is C
