Urgent question i really need somebody to answer this its super important okay plese help meee JK Good morning, im lonely and need somebody to talk to for school so hello

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

Find a word that makes the both words

Secondary school falls between a . kindergarten & elementary b. elementary school & post secondary school c. post secondary school & higher education d. middle school & high school