The correct answer is option 'B', Banawali.

Banawali is an important Harappan site located in the Fatehabad district of Haryana, India. It was excavated by the Archaeological Survey of India in the 1970s and 1980s. The site dates back to the Mature Harappan phase, around 2600-1900 BCE.

Terracotta artifacts are an important aspect of Harappan civilization. These artifacts provide valuable insights into the culture, technology, and daily life of the people who lived during that period. One such terracotta artifact found at Banawali is the 'plough'.

The discovery of the terracotta plough at Banawali is significant because it provides evidence of the agricultural practices of the Harappan people. The plough was a crucial tool in farming, and its presence suggests that the Harappans were engaged in advanced agricultural practices.

The terracotta plough found at Banawali is a finely crafted artifact. It is made of clay and has a distinct shape, resembling a plough. The presence of this artifact indicates that the Harappans were familiar with the use of the plough and had developed the technology for efficient farming.

The discovery of the terracotta plough at Banawali also suggests the presence of an organized agricultural system in the Harappan civilization. The use of the plough would have allowed for better cultivation of the land and increased agricultural productivity.

In addition to the terracotta plough, Banawali has yielded several other important artifacts, such as pottery, seals, figurines, and tools. These artifacts provide valuable information about the material culture and socio-economic aspects of the Harappan civilization.

In conclusion, the terracotta plough found at Banawali is a significant discovery that sheds light on the agricultural practices of the Harappan people. It suggests the presence of an organized agricultural system and highlights the technological advancements of the Harappan civilization.