Answer:
Sensors
Explanation:
Sensors are placed on dangerous machinery to detect motion, light, heat, pressure, or another stimulus. Their presence helps protect operators from injury while working on machines.
A.) - it is also known as the agricultural revolution, so this is definitely true.
b) - this is true, this is how it was possible
c) - this is also true! together with the cultural revolution came the domestication of animals
d) - this is false, on the contrary, it made people more independent.
You still need to pay your sister the $25 because you must keep your word. A promise is a non-negotiable instrument because it is not in writing. If you were to have it in writing that it could be a more arguable case.
