Literally free points and a picture because i dont know

Which of the following increases output thout requiring more input? a) land b) human capital c) physical capital d) technological progress

Asap 70 points do you think the little albert experiment was ethical or unethical? why? do you think that inflicting pain or suffering in the name of science is acceptable if something is learned from the experiment? why or why not?

Astitch in time saves nine. a penny saved is a penny earned. these sentences similar in meaning opposite in meaning neither the same nor the opposite