The most important economic effect of the internal combustion engine was trade became slower and less efficient. encouraging city workers to commute. increasing the price of gasoline. allowing goods to be shipped farther.

answer:

c.

explanation:

answer:

i havent taken the psat, but i have the sat, make sure to bring some snacks, because youre in there forever, 2 sharp number two pencils, an sat approved calculator, and maybe a jacket.   your phone and any books will be taken up, so don't try to bring them(but they will be given back at the end of the testing).   good luck!   i hope you do well!