Hello what is the meaning of?

Which of the following is not prohibited by georgia law? a. crossing a dividing section, barrier, or unpaved strip, which separates two roadways   b. coasting with the gears or transmission of the vehicle in neutral when traveling on a downgrade   c. entering or leaving any controlled-access (interstate) roadway at authorized entrances

It's often necessary to narrow a broad topic down while doing research to a. locate the most accurate information. b. make sure the search fits in the search bar. c. be sure you get the most hits possible. d. find many opinions about a topic.

Which equation gives the value of the circumstance, c, of a circle with a diameter of 48 feet?