Question

Si,______el hermano de David.

Answer 1

Answer:

Samuel

Explanation:

There wasn't much context in this, but I hope this is what you're asking.

No había mucho contexto en esto, pero espero que esto sea lo que estás preguntando.

Answer 2

Es

I think you’re trying to say “Yes, he is David’s brother”. Es would be the option for ser because the brother is a singular male so the él/ella/ud form