Start with what it is not. It is not minimalism. Minimalism is characterized by simplistic drawings that look like they have been drafted by a geometry set. The lines and colors are very simple and straight. If an object you are familiar with is drawn the use of color variation is at a minimum.
It's not cubism. Cubism is characterized by it's flat 2 dimensional surface and as far as I can see lack of contrasting color. It ignores many of the techniques it took centuries to develop.
It is not Fauvism which is characterized by its powerful use of contrasting color and shape. It favors more the feeling something gives you rather than the way it actually is.
So there is only one answer left. It is a very realistic drawing using pale light to emphasize the couple and baby(and not the young child) and a few people behind them. The yellow in the painting is very unusual. I've never seen 2 yellows used quite like that. It draws you to it, but the people themselves don't look that interesting.
I give this movie 4/5 its a pretty good American romantic drama film. There were two young patients with cystic fibrosis one male and one female and they fell in love with each other but they can't be closer than 5 feet together because they could get each other sick... They made a 5 foot stick that they held so that they could still talk with one another but not get sick. They then got into some trouble while they were walking and the boy had to do mouth to mouth because she was drowning and they surprisingly she didnt get sick from him...