The text feature, if used, would best help the reader understand the importance of lowering the cover slip slowly is option D: Bold Font.
What do you mean by Text?
A text is generally defined as a book or a written work rather than the physical form. Moreover, it is in a primary Form.
Normally the text is in verbal or non-verbal form in order to provide information to others. A text can be narrative and descriptive etc.
The sustainability of lowering the cover sip can be easily defined with the help of bold the font because through this readers can easily understand the text.
Adding to it, the hyperlink, headings and diagrams that are related to the cover slip does not required for the understanding the concept.
Therefore, correct option is D.
Learn more about Bold Font, refer to the link:
https://brainly.com/question/3618985
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