B.To emphasize something important
C.To indicate steps in a process
D.To show cause and effect
The best reason to use bold font is to emphasize something important that is option B. Bold font is a useful tool for drawing attention to specific words, phrases, or ideas in a document.
By highlighting key information in this way, the writer can help the reader to quickly identify and understand the most important points of the document.
Bold font can also be used in combination with other formatting techniques, such as underlining, italicizing, or using color, to create visual hierarchy and structure in a document. However, it is important to use bold font judiciously and sparingly to avoid overwhelming the reader with too much emphasis.
Bold fonts are not used to separate document or to indicate step in a process. Similarly it does not show any cause and effect. Hence, option B is correct.
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B. Emotion
C. Qualification
D. Description