Help please. which answer is it. and thanks for your help!

Which of the following is one of the innovations that neolithic farmers become more productive? a) plow b) windmill c) tractor d) reaper

Open opinion / / / if a juvenile committed murder, should the juvenile be in prison for life or be free and seek instead? which and why?

What environmental challenges does asia currently face (choose all that are right)a. wastelands created by mining b. too little rainfall for crops to grow c. hydroelectric dams harming the fish industry d. industrial activity harming the environment