Choosing for a career is one of the most important decision that one should make. There a number of factors that might affect this. Here are some:
Introversion vs. Extroversion = Most people are close to the middle of the spectrum and will be most happy in a career that balances time alone with social interaction.
Resources available = you can only readily use what you have in the moment so choosing where to go should be done wisely
Family = oftentimes, it is the family you are with that influences you what do you want to be and what you want to do
Environment= when you adapted fully to a certain environment you tend to choose that over anything else so it influences your decision
The answer is Circulatory System. It is responsible for moving blood and oxygen around the body, etc. (Brainiest answer plz and thank you) Hope this helped!