A number of factors can affect productivity and economic development.
Assign the following items to the appropriate factor category and state whether the effect would increase or decrease economic development.

(a) A hurricane destroys several oil refineries on the Gulf Coast.
(b) A computer software glitch causes a factory's production line to shut down for 5 hours.
(c) A new oil field is discovered in western North Dakota.
(d) A new drilling rig can extract oil more quickly from wells.
(e) Children in a high-crime area miss school due to safety concerns.
(f) A neuroscientist publishes a journal article on a process for improving students’ retention.