Buddha spent his maximum rainy seasons in which place?

Correct option is B

The Buddha spent his maximum number of rainy seasons (Vassa) in Sravasti (Sāvatthī).

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The Buddha is traditionally said to have spent 24 rainy seasons in Sravasti.
During his time there, he resided mainly at the Jetavana monastery and occasionally at the Pubbarama monastery.
Sravasti was the capital of the ancient kingdom of Kosala and was the location where the Buddha delivered the highest number of his discourses and teachings.
He spent the rest of his rainy seasons in other places, including the first one at Sarnath (near Varanasi), and several others at Rajagriha and Vaishali.