Final answer:
Ivana's brain tumor is most likely affecting the medulla oblongata, a part of the brainstem responsible for regulating vital functions such as heart and respiratory rates and blood pressure.
The Correct Option is; D) Medulla oblongata.
Step-by-step explanation:
The area of the brain that is most likely affected by the tumor in Ivana's case, given her inability to maintain appropriate heart and respiratory rates, as well as blood pressure, is the medulla oblongata (D).
The medulla oblongata is a part of the brainstem that controls vital bodily functions, including heart rate, respiration, and blood pressure regulation. Therefore, a tumor in the medulla oblongata can severely impact these critical autonomic functions, necessitating life support.
The most likely area that the tumor is affecting is the Medulla oblongata. The medulla oblongata is responsible for controlling vital functions such as heart rate, respiratory rate, and blood pressure.
When damaged or affected by a tumor, it can lead to the inability to maintain appropriate heart and respiratory rates, as well as trouble maintaining blood pressure.