Answer:
a. to make language more specific
Step-by-step explanation:
The role of diction in writing is to make language more specific, to specify tone and atmosphere by choosing the author of words.
Selections of descriptive terms can significantly alter readers' attitudes toward the subject being written. This use of vocabulary can also convey a great deal of general feelings from the writer to the completed work.
Diction can be formal or informal in style, and some types of prose can even combine the two styles to varying degrees. A separate species of diction is also common in poetry, and is generally intended to create patterns of words that are distinct from written prose or spoken language