Answer:
observational study
Step-by-step explanation:
This situation calls for an observational study. Unfortunately, cardiovascular health is difficult to measure unless one defines some "health scale" so that health could be roughly quantitized.
<em><u>18/50</u></em>
<em><u>27/75</u></em>
<em>and</em>
<em><u>36/100</u></em>
<em>are all equivalent fractions to 9/25 </em><em>because</em><em> </em><em>when</em><em> </em><em>you</em><em> </em><em>reduce</em><em> </em><em>them</em><em> </em><em>to</em><em> </em><em>lowest</em><em> </em><em>terms</em><em> </em><em>you'll</em><em> </em><em>get</em><em> </em><em>9</em><em>/</em><em>25</em><em> </em>
Hope this helped - have a good day bro cya)
