Theres 10 pieces in a Dominos
Avoiding a conflict isn't healthy in sustaining positive relationships for a few reasons. One, if something bothers you and you don't say anything about it, you'll allow the issue to fester. Eventually, it may come up in the wrong way or at the wrong time. Second, if you always avoid conflict, the other person in the relationship will never know what you're actually thinking, which will lay the foundation for a shaky relationship.
I would say the correct answer would be Alex is his brother since the way the statement is worded, first it talks of his sister, then of his brother Jerry and next his sibling, Alex so since it comes right after the mention of his brother Jerry I would think Alex would be a brother though I can't prove it .