What present-day countries' geographic boundaries have changed little since 1520?

Morning guys i got some questions for ya heading your way answer !

23. public and private investment in infrastructure include all of the following except a) worker knowledge and skill development b) telecommunication systems, internet provider systems, and power distribution systems c) highways, transit systems, airports, harbors, and educational facilities d) fire departments, police departments, and public safety systems e) water systems, wastewater treatment systems, and navigational systems

Free points + brainliest ! only for correct answer when a vehicle is in motion, it has a. no weight b. no inertia c. potential energy d. kinetic energy