My grandchildren have changed a lot in the last year - they are growing up , after all , as children tend to do . Last year , Luka still needed some help with dressing , toileting , and had to be watched pretty closely . Now he 's running around with the rest of the crew , playing hard and enjoying being a boy .

Question: Why is Luka showing more confidence lately ?
Answer: He has had children of his own .He is a man .None of the above choices .He is getting older .