I believe it would be Sera since we're talking about Carlos as a "him".
1) to be an entrepreneur or partner is necessary that the person has legal capacity, ie is 18 years of age, be in full possession of his mental capacity is not bankrupt. this way, we can say that people between 16 and 18 years old can be entrepreneurs or partners:
This is the order: Al , y , de , en , a la , del , a , con , de la
nine countries in SA have Spanish as an official language.
