Dürer's two written works regarding art are a. dürer's philosophy and human perspective b. monumental perspective and landscape composition c. linear perspective and musculature design d. treatise on measurement and four books on human proportions

I believe the correct answer is D. Treatise on Measurement and Four Books on Human Proportions.

Albrecht Dürer was a painter, printmaker, and theorist of the German Renaissance. He wrote two theoretical books – “Four Books on Measurement” and “Four books on Human Proportion” which are reinforced by his theoretical treatises, involving principles of mathematics, perspective, and ideal proportions. These book were written in German rather than Latin, which contributed to the expansion in German prose which Martin Luther had begun with his translation of the "Bible".

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artists need to create a realistic interpretation so that people in general can relate to the artwork. for a common people, an artist's impression gets increased only if he can create something which would look realistic. an abstract is difficult for a common people to understand whereas if a person can draw a girl with simple pencil sketch and if that looks like a real figure then the latter will be praised more than the former.