Economics! I need help!?

[I Lost My Nickname!]

1) If there is only one seller of the good, the seller will not be a monopoly if:
a) the seller is a sole proprietorship.
b) There are complements for the good.
c) The seller is small
d) There are closed substitutes for the good

2) State governments make it illegal to run private lotteries but legal to have state- lotteries:
a) to give them leverage to increase state taxes
b) to increase the profitability of the state-run lotteries
c) to improve the efficiency of the lottery industry to be allocatively efficient
d) to ensure rate-of-return regulation of lotteries