A hut with a pointed roof, or in groves where travelling mendicants halted were known as:

Kutagarashala

The correct answer is Option (2) → Kutagarashala

We get a glimpse of lively discussions and debates from Buddhist texts, which mention as many as 64 sects or schools of thought. Teachers travelled from place to place, trying to convince one another as well as laypersons, about the validity of their philosophy or the way they understood the world. Debates took place in the kutagarashala – literally, a hut with a pointed roof – or in groves where travelling mendicants halted. If a philosopher succeeded in convincing one of his rivals, the followers of the latter also became his disciples. So support for any particular sect could grow and shrink over time.