which of these sentences a consensus

Question

it is agreed that all city zoos and museums should be totally free to the public
it has been proven that driverless cars are far safer and dependable than traditional cars
it has been determined by the audience that solar panels rather than air conditioners are the best way for the school to use its grant money
it is clear that each one of us needs to appeal to the community about the need for a bike trail

Answer 1

The sentence that reflects a consensus is:

"It has been determined by the audience that solar panels rather than air conditioners are the best way for the school to use its grant money."

This sentence indicates that a group (the audience) has come to an agreement on a specific course of action. The other sentences express opinions or claims that do not necessarily imply agreement among a group.