Free points! i dont know what to put here

Only five questions! needed! 8. der a)bist alt b)sind alt c)sieht alt aus d)saht alt aus 9)die a)hat blondhaarig b)bist blondhaarig c)sind blondhaarig d)ist blondhaarig 10)die a)hat gelp b)ist gelb c)bist geld d)sind gelt 11)die alten a)ist alt b)sind interssant c)sein drumm d)seid stark 12)paula und marie a)sehen schlank aus b)sein alt c)haben schon d)ist neu

Which of the following is a social cost of economic instability? a. wasted resources c. economic growth b. inflation d. full employment

Someone me with these german questions?