Which two details support the central idea that harun al-rashid was an extremely rich and learned ruler?

a."harun al-rashid himself was a big supporter of the arts and music, and these artistic pursuits flourished, while he reigned as caliph."

b. "a center of the arts and learning, baghdad was also a city of dazzling wealth and luxury."

c."harun al-rashid became the fifth caliph of the abbasid dynasty in 786, and went on to become its most famous and celebrated leader."

d."harun al-rashid was the second son of caliph al-mahdi, the 3rd abbasid caliph of the arab empire."

A) and B)

Explanation:

Since he was a big supporter of the arts and music, Baghdad was a center of arts, learning and culture.

During Harun al-Rashid's rule, Baghdad begins to flourish.  It was the center of knowledge and luxury and that's the best thing that represents him as a ruler.  

He was in love with art, music and culture.

A and B.

Explanation:

Harun al-Rashid was the fifth Caliph of the Abbasid Dynasty. A caliph is a religious and political leader of Islam. He was twenty years of age when he became the caliph. It is believed that during his reign Baghdad prospered.

He was given education of Quran, poetry, music, Prophet Mohammad's life, and even the laws of Islam. He was a big supporter of arts and music shows that Rashid was a learned ruler; that is option A.

The second detail of him being a learned and rich ruler was that he was the ruler of the Baghdad; a city which was at the zenith of the luxury.

So, the correct answers are options A and B.