Which one of the following words is most similar in meaning to the word, 'bounty'?

In the context 'attributable to the bounty of the Himalayas', 'bounty' refers to the generous abundance of resources, gifts, and benefits provided by the Himalayas. While 'generosity' is related, 'abundance' more precisely captures the sense of plentiful natural resources (water, climate, ecosystems, etc.) that the Himalayas freely provide. 'Assets' is too general and 'sympathy' is unrelated. 'Abundance' is the closest synonym in this context of natural plenitude.