Final answer:
The best description of Dr. Kerr's use of language, based on the provided excerpts, is 'Technical and precise'. The language is specialized and focused on descriptive diction and technical terminology related to visual rhetoric.
Step-by-step explanation:
Considering the information provided about Dr. Kerr’s use of language, the best description of this style would be d) Technical and precise. Throughout the excerpts, it is evident that Dr. Kerr demonstrates a consistent or usual familiarity with technical language, specifically the terminology associated with visual rhetoric such as 'line,' 'light,' and 'point of view.'
Additionally, Dr. Kerr is said to engage the reader with an engaging and professional tone, suggesting precision in wording and effectiveness in communication. The author is also focused on editing focus, employing descriptive diction and sensory details, adhering to academic writing standards while trying to meet or challenge conventional rhetorical expectations.