Answer:
a. there will be no new jobs created in net because there will be about the same number of restaurant jobs lost near the old stadium as gained near the new one.
Explanation:
If the sports team already has a stadium in an area, and said stadium is demolished, or simply abandoned, because a new stadium is built with public money, the net effect in job creation will likely be very small, because the jobs  associated with the old stadium will be lost and replaced in similar number by the jobs associated with the new stadium.
Besides, the opportunity cost of using public funds to build a new stadium can be very high. Said public money could have been used instead to fund public schools, or hospitals.