Hi there! I understand Spanish can be extremely confusing, I'm here to help!
Let's break this sentence down by translating what we do know.
'El hijo'- masculine form of child, son
'tu'- your
'padre'- father
Let's combine these words together.
'The son of your father is your _________'
Now, think about if your dad had a son. That would make him your brother.
Translating brother to Spanish is 'hermano' (masculine form). So your final answer is hermano.
