Employment opportunities were limited in tijuana. manuel, who had been unemployed for several months, decided to join a group of people traveling north to find work. what concept is described by the paragraph above? population growth urbanization push-pull sustainable development

Push-pull is the answer

Push-Pull Is The Answer

d. new methods of assembly are introduced.

explanation:

this allows for the goods to be made on a larger scale. not faster because now it is shown to be made better, hence the greater productivity in the question. it is calling for something new to be introduced.