Explanations:The question asks for the oldest monument among the given options: Qutub Minar, Ajanta Caves, Khajuraho, and Taj Mahal. To determine the correct answer, it is essential to understand the historical context and the timeline of construction for each of these monuments.
The Ajanta Caves, located in the Aurangabad district of Maharashtra, are a series of 30 rock-cut Buddhist cave monuments. These caves were carved out of solid rock and are known for their intricate carvings and paintings. The Ajanta Caves were constructed over a period of about 600 years, from the 2nd century BCE to the 6th century CE. The earliest phase of construction dates back to the 2nd century BCE, making the Ajanta Caves the oldest among the listed monuments.
The Qutub Minar, located in Delhi, is a minaret that was constructed in the 12th century CE. It was built by Qutb-ud-din Aibak, the first Muslim ruler of Delhi, and completed by his successor Iltutmish. The Qutub Minar is a significant example of early Indo-Islamic architecture and is a UNESCO World Heritage site. However, it is much younger than the Ajanta Caves, as it was built in the 12th century CE.
The temples of Khajuraho, located in Madhya Pradesh, were built between the 9th and 10th centuries CE. These temples are known for their intricate sculptures and are a UNESCO World Heritage site. The Khajuraho temples are a significant example of the Chandela dynasty's architectural and artistic achievements. However, they are much younger than the Ajanta Caves, as they were built in the 9th and 10th centuries CE.
The Taj Mahal, located in Agra, was constructed in the 17th century CE. It was built by Mughal Emperor Shah Jahan in memory of his wife Mumtaz Mahal. The Taj Mahal is a mausoleum and is considered one of the finest examples of Mughal architecture. However, it is the youngest among the listed monuments, as it was built in the 17th century CE.
Therefore, the Ajanta Caves are the oldest among the listed monuments, dating back to the 2nd century BCE. They are a significant example of ancient Buddhist art and architecture and are a UNESCO World Heritage site.