Answer:
“Henry, ride out to the Shelby homestead and send word.” The Shelbys lived four miles away, so Henry would have to bunk with them for the night, but Ruth knew that they’d arrive the next day with provisions and help for the new family.
Step-by-step explanation:
This is the line that best supports the claim that families on the prairie survive by helping one another. In this excerpt, we can see that Ruth is sending Henry to talk to the Shelbys. Her belief in the hospitality of her neighbours is so big, that she is sure that they will arrive with provisions the next day. This shows that families help each other constantly.