In 2011, NASA's space shuttle program in Florida came to an end and there was a span of time before the next space program started. Which of these most likely happened during the gap after the space shuttle program ended and the next space program started?

a. increase in the number of people visiting the location
b. slowdown in local housing and construction business
c. establishment of many restaurants and shops in the vicinity
d. decrease in the use of space technology among local people