question:  What is the primary significance of the final scene?
context: When they part it's Mom's hand that's on the bag's handle. Inside she unwraps herself from scarves and layers, the heat in the house almost a shock after the cold air. "Mom, just leave that and I'll…" "Your father's in the front room," she says, just before she disappears from view. For a few seconds Sara is alone in the hallway, the smell of cooking meat coming from one doorway, the sound of rolling news from another. The war spills out of Fox News, casualty figures scrolling across monochrome drone footage, attack helicopters circling over Caracas apartment blocks, pundits with bronzed skin and immaculate blond hair smiling from four-way split screens. An elderly couple ride a tandem bicycle through a park, laughing and smiling in Instagram-perfect sunshine, as a calm, relaxing voice lists the potentially lethal side effects of a diabetes drug. Sara turns back to the TV, to watching the war, to trying to work out which one it is. It was constant warfare; every opinion she had became a battle, every decision she made a conflict. Dad is in the bathroom, and Sara has had enough of Fox and whichever war this is. She reaches over and grabs the remote from the arm of his chair, and tries to find something else to watch. In her pocket her phone vibrates, purrs against her skin, reminding her it's there, making sure she's not forgotten where her real friends are, that there's a world outside, beyond Dad and his TV. She takes it out and cradles it in her hands, the dark screen fleetingly reflecting back her face before it jumps awake at her very touch, opening up to bathe her in blue light, in comfort and warmth and the familiar.
output:  It shows that the media control runs deeper than the reader might have expected
options:  It shows that Sheryl is going to be okay in the end  It shows a subversion of expectations to add irony to the story  It shows that the media control runs deeper than the reader might have expected  It shows that Ed and Sara will really be able to settle their differences