Bio. Pillar : They were both outside having a picnic and laying together. This connects to the pillar because they're both out in nature and are conscious of themselves and whats around them.
Cognition Pillar: Ellie is in the hospital and she gives Carl the adventure book. That connects to this pillar because it's supposed to be full of memories for their adventures.
Life Span Develop. & Learning Pillar: They show transitions of them getting older and eventually her dying. This connects to the pillar because it starts when they're young and then old and it shows their life span together.
Social & Personality Pillar: Carl goes into a house and see Ellie and sees that she shares the same interests as him. This connects to the pillar because it shows Carl being social and interacting with someone and making a new friend.
Mental & Physical Health: Ellie wasn't able to carry their child and her health also began failing. This connects to the pillar because it shows the negatives of the mental and physical health. Both of those events effected both of them hardly in the end.