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2. Expository documentaries expose a person or a topic.
Classic form of documentary and one of the four main types.
Well known for having a commentator talking over the videos or
photographs inclusive, explaining the story or facts behind them.

3. CONVENTIONS
Main conventions of this form are:
A commentator
Rhetorical questions
Strong and varying opinions
Critical analysis
Facts
Persuasive techniques

4. AUDIENCE
This form of documentary appeals to an audience as the
commentator speaks directly to you as a viewer
The documentary is often biographical, historical or discusses a
certain event in detail.
They include footage, interviews or pictures exclusive to the
documentary and necessary in making the conclusion valid.