Please help me figure out the meaning of the word "retrieving" in the following sentence from the description of the game MudRunner Mobile:
You’ll make a delivery by night, where obstacles are not easy to spot, and hop between vehicles – retrieving materials in one truck to repair another that you’ll fill up to refuel a gas-guzzling third.
I found the lexical meanings of the word "retrieve" here, but am not sure which of them fits here.