If you were giving an informative speech to a general audience about digital encryption, the most important factor to consider when analyzing your audience would probably be the:
physical setting for the speech.
knowledge of the audience about the topic.
size of the audience.
attitude of the audience toward the speaker.
group membership of the audience.

KNOWLEDGE OF THE AUDIENCE ABOUT THE TOPIC.

Explanation:An informative speech is an speech whose aim is to ensure that certain information are passed on to the audience. This type of speech helps to build the knowledge level of the audience, the main consideration to make or review when planning to give an informative speech is to consider the knowledge level of your Audience. The knowledge level of your Audience will determine how the contents and your manner of presentation.

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the secretary of state, appointed by the president with the advice and consent of the senate, is the president's chief foreign affairs adviser. the secretary carries out the president's foreign policies through the state department and the foreign service of the united states.