The scientific essay mainly consists of expository writing. Thus, option D is correct.
What do you mean by expository writing?
Expository writing consists of facts and figures based on real-time data. This type of writing aims to provide knowledge to the reader to gain a better understanding of the topic.
Scientific essays also consist of information about any issue and provide solution-based to the available facts and information. These both are related to each other. All the other options are providing entertaining content.
Therefore, option D expository writing is found in scientific essays.
Learn more about expository writing, here:
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