Preposition of place with landmark/house name: complete the sentence with the correct preposition. Base sentence: "Jawaharlal spent his childhood _____ Anand Bhawan." Instruction: Choose the preposition typically used with named buildings as locations. Final instruction: Select the option that is idiomatic in standard English.

Given data

• Place reference: Anand Bhawan (a proper-noun building/estate).

Concept/Approach
With named institutions/houses used as points or venues, at is standard for location ("at Anand Bhawan"). In can be possible when emphasizing the interior, but tests typically prefer at for neutral location with proper names.

Option analysis
at — idiomatic with named buildings as locations. ✅in — possible in some contexts, but not the test's expected collocation. ❌on — used for surfaces; incorrect. ❌across — preposition of movement/position across from; not intended here. ❌

Usage tip
Compare: "at school/college/home" (general location) vs. "in the school building" (inside).

Final Answer
at