Select the most appropriate meaning of the bold idiom in the given sentence.

When they read about the proposed strike of buses they said, “We’ll cross that bridge when we come to it.''

Solve the problem

The answer is Solve the problem.

The idiom "cross that bridge when we come to it" means to postpone dealing with a problem until it becomes necessary. In the sentence, the people are not worried about the proposed strike of buses yet because it has not happened. They are choosing to "cross that bridge" when they come to it, meaning they will deal with the problem when it actually happens.

The other options are not correct. Preventing the strike would be proactive, not reactive. Calling the bus drivers for talks would be a way to try to solve the problem, but it is not the same as postponing it. Canceling their plans would be avoiding the problem altogether, not solving it.