You are part of the response to a motor vehicle collision on a busy highway. There are multiple vehicles involved and multiple casualties. The police and local fire department are all part of the same response. In order to facilitate effective communication among response agencies .

An interoperable communications system should be utilized.

Explanation:

According to a different source, these are the options that come with this question:

an interoperable communications system should be utilized.all agencies should utilize the same communications system.a trunking system should be used to ensure that no communications are missed.a simplex system should be used to ensure no communications are missed.

The most important factor to take into account in this situation is that there is a great variety of people involved in this disaster. Many vehicles were involved, many casualties occurred and both the police and the fire department are involved. Because of this, it is important to establish an interoperable communications system that allows all these different entities to remain in contact.

I think that the wiki source would be the least credible out of all of them.

Explanation:

The reason why I think that it is the wiki source is because all the other ones are government websites or school related sites that can be trusted but wiki can be incorrect an outdated. Take wiki how for an example.