Answer:
Hey there!
Trustworthiness: the ability to be relied on as honest or truthful.
This is a trait that all human beings develop, it is a thing that we cannot stop developing, and as we get old the trait gets stronger. This trait is a important trait to have within life, because if you don't you will not know who, is worthy of trusting, or who can be your friend or not. Trustworthiness will also help you in your actions of who you decide to trust or not.
HOPE THIS HELPS ;)
