The house of wisdom preserved the literature and discoveries made by a. caliphs b. muhammad c. muslim scholars d. ancient civilizations

C. Muslim scholars

Explanation:

The House of Wisdom, at first, was founded as a library to keep the collections of the Caliph Harun al-Rashid. Later it was turned into a public academy by another Caliph.  Many muslim scholars took part in the House of Wisdom, either by helping translating or adding something new to the collection of knowledge.  

where is the picture of the graph or table?

answer; ///i believe that the correct answer is ; hieroglyphs or glyphs; the maya script, also known as maya glyphs, was the writing system of the maya civilization of mesoamerica; as always plz check first..good luck