What was the main complaint about proposition 187?
a. it was not harsh enough.
b. it ignored immigrants who stayed in the united states on expired visas.
c. it was unconstitutional.
d. it ignored the problem of legal immigration.

"choosing is refusing" means individuals face an opportunity cost with each decision they make. economists state that every decision involves trade-offs. opportunity cost is the least desirable alternative given up as a result of a decision.

which sentences ? that question is incomplete

answer; provide for the common defense:

answer; biological;