Aman is holding a group of people hostage. he is threatening violence if his demands are not met. the police negotiator believes that she might avoid violence if she lies to him, saying that the money and a helicopter are on the way. she hesitates. she reasons, "i know this is a unique situation but if lying was the rule for all, the world would be an unhappy place. i know a better way to save lives without lying." which approach would support her motivation.?

Rule Utility.

Explanation:

Utilitarianism can be defined as a doctrine according to which actions can be correct only if the effect of that action is in the favor of majority or for the betterment of the majority of people.

Rule utility can be defined as a doctrine according to which action can be good only if it is morally correct and conforms to the rules.

In the given, the police negotiator is using the rule utility doctrine because she believes that lying is not morally correct and hence do not conform to the rules, so she will take other actions in the situation.

So, the correct answer is rule utility.  

what are the choices? the multiple choices?

i will answer in the comments after the choices have been said.