Answer:
D. He has increased his knowledge.
Step-by-step explanation:
There is not much one can do to when it comes to genetics. But what can be helpful is awareness. Ron has read and informed himself on all the causes and symptoms as well as what can be done in order to prevent the development of genetically predisposed diseases.
He then know to avoid high adrenaline as well as stressful situations. When it comes to drinks and foods - sugar as well as coffee should be avoid.