The Amaravati Stupa is a prominent example of Buddhist architecture from the:

Maurya period
Satavahana period
Gupta Period
Chalukya period

The correct answer is B. The Satavahana period.

The Amaravati Stupa is a Buddhist stupa located in Amaravati, Andhra Pradesh, India. It was built during the Satavahana period (230 BCE – 220 CE) and is one of the most important examples of Buddhist architecture in India. The stupa is a large, hemispherical structure that is surrounded by a series of concentric terraces. The terraces are decorated with relief sculptures that depict scenes from the life of the Buddha. The stupa is also home to a number of Buddhist relics, including a tooth of the Buddha.

The Satavahana period was a time of great cultural and religious development in India. The Satavahanas were a powerful dynasty that ruled over much of the Deccan Plateau. They were patrons of the arts and sciences, and they built many temples, palaces, and other monuments. The Satavahana period is also considered to be the golden age of Buddhism in India.

The Amaravati Stupa is a UNESCO World Heritage Site. It is one of the most popular tourist destinations in India. The stupa is open to the public and is a popular place for pilgrimage and worship.

The other options are incorrect. The Maurya period (322 BCE – 185 BCE) was a time of great political and military expansion in India. The Mauryan Empire was one of the largest empires in history. The Gupta Period (320 CE – 550 CE) was a time of great cultural and economic prosperity in India. The Chalukya period (550 CE – 750 CE) was a time of great political and military power in India.