Answer:
Hijo
Step-by-step explanation:
You can tell the mom is talking about a male because she is speaking in masculine that leaves only as possible answers:
- padre - hijo
The translation is:
I'm a mom and I'm 50 years old. My_____ is 12 years old. He is creative.
So, it's clear that she is talking about her son once you translate it.
Hope it was helpful ;)