When are commas necessary to include with numbers

Which of the following statements is true about the figure below?

Wha is"centrifugal bumble puppy "? why is it important for games to require a complication apparatus? (brave new world)

Read the excerpt from "a modest proposal." the poorer tenants will have something valuable of their own, which by law may be made liable to a distress, and to pay their landlord's rent, their corn and cattle being already seized, and money a thing unknown. which statement effectively uses a quotation to show that swift claims that the poor will also benefit from his proposal? “swift writes that poorer tenants will have something valuable of their own, which by law may be made liable to a distress.” swift writes that poorer tenants will finally have something to pay their landlord’s rent since they have neither money nor trade. swift writes that poorer tenants will have something to trade for rent since “their corn and cattle” have already been seized. swift writes that “poorer tenants will have something valuable of their own” that can “ to pay their landlord’s rent.”