Question

Well, it was clear to me-and my parents later confessed that it had been obvious to them, too-what my aptitude was.

I have to describe what aptitude means in this sentence.

Answer 1

(I’m pretty sure this is from the giver and if it’s not then just ignore the whole answer)
The aptitude is what Jonas’s father is good at. The sentence is saying that they already knew that Jonas’s father had a special skill for interacting and caring for newborns.