All of the above, depending on exact conditions
- when I was entirely without a car, I just walked. I was single so carrying groceries usually worked ok. As a first Thanksgiving when I got married I Walked to the grocery like 5 times for all the stiff we needed and didn’t think of ahead of time
- I saw plenty of people with carts and tried that a few times
- I briefly tried delivery
- I saw people using taxis - I didn’t realize at the time but many of them compromised by walking to and taxiing back
- I have usually had a car though, even if groceries was my only weekly trip (plus occasional needs)
Actually now that I live in an urban suburb, I could do a lot without a car but carrying groceries is not worth the fight to find an alternate way