B) What were the primary teachings of Dars-e-Nizami?

Explanation:

In 18th century Mulla Nizam al Din Sihalvi presented his famous curriculum known as Darse Nizami. The main subjects of this curriculum were: The Quran, Hadith (Tradition), Jurisprudence, Principal of Islamic Jurisprudence, philosophy, Logic, Arabic Literature and theology.

what the first or next guy says

nothing certain is known about what happened, but it seems that the country declined gradually, perhaps due to bad government, or, more likely, due to a series of bad harvests, which resulted in widespread and recurrent famine.