Economist friedrich hayek argued that can serve as signals in an economy.
a. producers
b. consumers
c. government
d. prices

Economist Friedrich Hayek argued that prices can serve as signals in an economy. Correct D

This  Austrian economist it is known for his defense of free-market capitalism and is remembered as one of the greatest critics of the socialist consensus. According him  changing prices relay information that helps people determine their plans is widely regarded as an important milestone achievement in economics

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explanation:

in this scenario it would be the consumer demand as most influential in making the decision. the band members need to figure out where and from whom they will make the most money, in other words who out of the two consumer groups - football fans or car drivers - will spend their money, who is more likely to contribute to their cause and buy what they are offering.