There are no given choices nor a description on what has taken place in the Virtual Lab, however, possible reasons or combinations leading to hypertension are:
a. genetics and lifestyle - if a person has keens that have this disease and he does not maintain a positive lifestyle he is predisposed to this disease.
b. stress and environment - if a person is constantly exposed to a stressful situation, this could have an effect on his blood pressure, thus leading to hypertension.
I think the answer is D. ( or supported by observations ). Because theories change over time, they both NEED to be proven, they do NOT go off of consensus, but they do NEED to be supported by observations.
I hope this helps.
the brain stem controls involuntary actions such as breathing, heart beating and blinking.
Each nucleotide only pairs with one nucleotide
