Y'all w. t.h is this guys my photo drive is full of memes

Which of the following must happen in order for productivity to increase? a. production levels remain unchanged while inputs increase. b. production levels rise while inputs decrease. c. production levels fall while inputs increase.

Ahands-free device may only be used if it can be activated or deactivated with a

Consider the image seen here. the image, at point y, represents the process of during which a is being produced.