Answer:
A) AV node
Explanation:
According to my research on studies conducted by various medical professionals, I can say that based on the information provided within the question the structure being mentioned is the AV node. The atrioventricular node is responsible for connecting the atria and ventricles transferring the depolarization wave from the atria to the ventricles.
I hope this answered your question. If you have any more questions feel free to ask away at Brainly.
Scientific method is a continuous process. This process starts with the observation of a certain phenomenon. Based on what is observed, a hypothesis is develop to describe this phenomenon. This hypothesis is then tested by experiments where the results of these experiments either confirm or contradict the developed hypothesis.
If the hypothesis is contradicted by the results of the experiment, then another hypothesis is developed and tested for either confirmation or contradiction.
Based on this, any question that cannot be tested and studied experimentally cannot be solved using scientific methods.
Mercury Barometer and aneroid Barometer