Question

though host cities earn a great deal of money, every olympics held in the past 50 years cost more than expected. andrew zimbalist, a professor in sports economics, estimates that the next summer olympic games will cost between $15 billion and $20 billion for its host city, but the event will create revenue of only $4 billion to $5 billion. why did the olympic structures in brazil crumble? they were located in a city with too few people. they were built too far away from the host city. they were too expensive to keep in good condition. they were too easily damaged by the summer heat.

Explanation:

The provided text emphasizes that Olympic costs far outpace revenues. For Brazil's Olympic structures, the high cost of upkeep relative to generated revenue would mean they were not maintained properly, leading to crumbling. The other options are not supported by the given context.

Answer:

C. They were too expensive to keep in good condition.