Which term describes the combination of several influences on an outcome?

Interaction

Explanation:

Interaction refers to effect of two or more variables connecting together. Generally the stronger variable lays a great influence on the smaller variable.

Each variable lays influence on the outcome, and depending upon such influence there lies the connection which further results into outcome.

A majority of variables moving in the same direction and connecting well also overlays an individual variable and then lays a strong influence on the outcome.

It is the Interaction which emphasises on the quality and content of outcome.

The correct answer to this question is letter "a. incident command post." The incident facility that is the location where personnel and equipment are kept while waiting for tactical assignments is the incident command post. Hope this helps answer your question.