To answer this question, we need to understand the rulers mentioned in the options. Let's go through each option to determine which ruler is referred to as the 'Mad Monarch':
Option A) Hyder Ali - Hyder Ali was the ruler of the Kingdom of Mysore in southern India during the 18th century. He is not referred to as the 'Mad Monarch'.
Option B) Mohammad bin Tughlaq - Mohammad bin Tughlaq was a Sultan of Delhi from the Tughlaq dynasty in the 14th century. He is famously known as the 'Mad Monarch' due to his unconventional and often erratic decisions during his rule. This option is correct.
Option C) Qutb-ud-din Aibak - Qutb-ud-din Aibak was the founder of the Delhi Sultanate and ruled as its first Sultan in the 12th century. He is not referred to as the 'Mad Monarch'.
Option D) Aurangzeb - Aurangzeb was the Mughal Emperor in the 17th century. Although he is known for his strict and orthodox rule, he is not referred to as the 'Mad Monarch'.
The correct answer is B) Mohammad bin Tughlaq. This option is correct because Mohammad bin Tughlaq is famously known as the 'Mad Monarch' due to his unconventional and erratic decisions during his rule.