Amanual, memo, or report would all be types of documents.

a. workplace

b. public

c. consumer

d. research

A manual, memo, or report would all be types of workplace documents.

Option A

Explanation:

A manual, memo and report serve as medium of information. It describes certain things or events and is then presented with references and citations.

They are generally used for formal communication in a workplace. These writings involves technical writing and are written in a certain format.

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"hidesato showed not the least sign of fear. he tried to calm the dragon king: don't be afraid. i shall surely kill the centipede."

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