1. How do these thins reflect changes in family life ?
a ) The picture with the girl who graduate highschool / college I thnik reflect she will be studying in another city or country or she will find a job away from home.
b ) I think the picture with the couple who is entering in their new apartment reflect they are moving from their parents and start a life together.
c ) I'm thinking about the image with the baby, it can reflect a big change in a family, a new member can do a lot of things like repair old relationships between members of this family or a new experience for siblings.

2. Wich picture best shows the biggest impact on family life ?
I think the picture with the baby shows the biggest impact on family life because it's a big change for parents, grandparents or siblings, because it's a new member who can make peace in family if they have conflicts, can make new connections between relatives. It's a big impact for partens specially, because this is a new experience for them and I think they need all support they can have for this baby.