Which one is correct:
- A child born today inherits a world vastly different from that of its parent’s generation.
- A child born today inherits a world vastly different from that of his parent’s generation.
I found the first version of the sentence in a book. But my humble knowledge of English language says it must be written his instead of its.
What do you think and why?
EDIT:
The posts given on Is referring to people as "it" considered rude? do not answer my question because all the answers refer to rudeness and anger such as in the accepted one: this is something that would be said only in the heat of anger. But the author of the book is not trying to offend anybody.