Those who of you who answered "Assumption" were right on point ;)
The question was:
What is defined as: "Factors or conditions which are considered to be true or to exist without the need to provide documented evidence".
As a business analyst, you have to pay attention to assumption cues. In order to elicit assumptions, you must talk to the stakeholder and really listen to what they are saying. As humans, we easily make assumptions about things. And since communication isn't an easy task to accomplish, assumptions can become risks in your project.
An assumption could be related to resources, time or even money. Project team members and stakeholder can have assumptions about the type of solution that will be used (off the shelf, built in... etc) or they may make assumptions on technology standards.
Flush out the assumptions at the beginning and clear them out before they become risks.