The correct answer is commuter marriage.
Commuter marriage refers to the type of marriage which exists between two people who don't live together. In the case above, the husband lives in another city due to work, whereas his wife and kids live in their old city. However, he still comes to visit them as much as he can, when he is not working.
From the root of the word, the answer should be from ten to nineteen, because comes from teen and age but most of the time is applied from 12 to seventeen, considering 12 the finish of the childhood and eighteen the beginning of the adult life so as an int variable the correct answer is 12 to 17.