Answer:
Epidemiological.
Explanation:
Epidemiological study may be defined as the type of study that includes the different group of the human population to understand the factors that might affects the health.
This study also explains the risk of a particular factor in the population. In the given question, the study is done to understand the relationship between the delayed physical growth and low-income. This clearly explains the epidemological study and this study also have proper design to study the population in cohort.
Thus, the answer is epidemiological.
Here's a hyperlink
https://www.brainpickings.org/2012/09/17/the-meaning-of-life/
Cold can be caused by cold weather out side and the flu u can get from other people that are sick or bad living enviroments or rotton food
c) "I bet you have some kind of genetic problem that's messing up your bowels and your blood at the same time. You should have genetic testing."
A) Writing everything down in your fitness log
