What is the best way to: How can you tell if a child is a boy or a girl?

OPTIONS:
(a). Bend down and ask the parent, "What's your name"? The child will either answer or the parent will, then you are much more likely to have a good idea.;
(b). Bend down and ask the child, "What's your name"? The child will either answer or the parent will, then you are much more likely to have a good idea.;
Answer:
(b).